Elasticity of the rubber band is defined as the maximum length the rubber band stretches from its initial length when weight is placed on it. The stress is the amount of force applied to the object, per unit area ($F/A$). This is my data and The elastic limit of spring is its maximum stretch limit without suffering permanent damage. Skills: Restoring force means that the action of the force is to return the spring to its equilibrium position. Figure 3: Force vs extension curve for a rubber band. Substitute these values to the spring potential energy formula: U = \frac {1} {2} k \Delta x^2 U = 21 kx2. Therefore, a solid with a greater value of $Y$ will stretch less than a solid with a smaller $Y$, when the same force is applied. Direct link to Kyle Delaney's post Exercise 2 is worded very, Posted 6 years ago. A long, wide concrete sidewalk, driveway or other hard surface that you can draw on with chalk (as an alternative, you can make distance markers out of paper and place them on a surface on which you cannot draw) For a better experience, please enable JavaScript in your browser before proceeding. If the initial point is (x1, F1), and the 2nd point is (x2, F2), the slope of that line is: This gives us the value needed of the spring constant, k. Despite the sign in the Hookes law equation, the spring constant is always greater than zero because the slope in the Hookes law graph is always positive. If you believe this to be in error, please contact us at team@stackexchange.com. The most common method to get values for a graph representing Hookes law is to suspend the spring from a hook and connect a series of weights whose values are weighted accurately. If you're seeing this message, it means we're having trouble loading external resources on our website. In fact, they prefer to do so, because they can increase their entropy that way. Why is Youngs modulus a more general descriptor of rubber band action than Hookes law? The main reason for the difference is that you are deforming the rubber band more than the spring. Someone please explain, thanks. If you compare the two equations, you will find (try this as an exercise) that the spring constant $k$ contains Youngs modulus $Y$ (which describes the material), the length $L_0$, and the cross-sectional area $A$ of the material, can be related as in Eqn.3. What is the Youngs modulus of rubber band? Remember the angle and height at which you hold the ruler because you will need to keep it the same for each rubber band launch. k = F / (1). F denotes the force, and x denotes the change in spring length. In the graph, it isn't and just keeps growing as the displacement grows. Continue reading with a Scientific American subscription. Different rubber bands will have different constants for both laws. Direct link to levgenid's post Just above exercise 3 it . If the springs load is in kg, convert it into N by multiplying it with gravitational acceleration 9.81 m/s. Using a scissor, carefully and safely cut a rubber band so that it is becomes a single length of rubber and not a band. It turns out that the same procedure still applies. Data Sets Visualize Export Fields Formula Fields Divide the tensile stress by the longitudinal strain to obtain Youngs modulus: Is stiffness the same as Youngs modulus? Elasticity of the rubber band is defined as. How can global warming lead to an ice age. Address After you get the rubber band stretched just a little bit, it is very spring-like. Now take two rubber bands, and hold them side by side. Question to think about: Within certain limits, the force required to stretch an elastic object such as a metal spring is directly proportional to the extension of the spring. 2. This means Hookes law will always be approximate rather than exact even within the limit of proportionality but the deviations usually dont cause a problem unless you need very precise answers. Direct link to Jay Khan's post In question 2C, 2 x U sho, Posted 5 years ago. 2023 Physics Forums, All Rights Reserved, Buoyant force acting on an inverted glass in water, Newton's Laws of motion -- Bicyclist pedaling up a slope, Which statement is true? Stretch it by a distance x with your hands. If the force was constant, you wouldn't have a spring. When a spring is stretched, the force exerted is proportional to the increase in length from the equilibrium length, according to Hookes Law. Thanks for reading Scientific American. Some materials dont seem to be elastic as theyre brittle and can snap before they bend or stretch. Is stiffness the same as spring constant? I need help figuring out what the spring constant for the rubber Assigning errors and understanding error calculations, Materials/Equipment: Relating graphs of experimental data to given equations DATA ANALYSIS 1. This is equal to one half the mass (of the rubber band) multiplied by its velocity (in meters per second) squared. 5. I measured the initial length of the rubber band (0.200 m) then added 1 coin into the bag which caused a stretch in the elastic. We created the Hooke's law calculator (spring force calculator) to help you determine the force in any spring that is stretched or compressed. Knowledge awaits. Explore our digital archive back to 1845, including articles by more than 150 Nobel Prize winners. You can also think about what happens if you use two rubber bands at the same time, either to hang an object from both bands in parallel or to create a longer band by knotting one band to the end of the other band. Its also possible to directly calculate the spring constant using Hookes law, provided you know the extension and magnitude of the force. A spring with a 6 N weight added to it stretches by 30 cm relative to its equilibrium position. It wants the string to come back to its initial position, and so restore it. For my experimental setup I hung a rubber band from a support with a container tied to the bottom of the band. It means that as the spring force increases, the displacement increases, too. View the full answer. Rubber elasticity refers to a property of crosslinked rubber: it can be stretched by up to a factor of 10 from its original length and, when released, returns very nearly to its original length. The formula to calculate the applied force in Hooke's law is: F = -kx where: F is the spring force (in N); k is the spring constant (in N/m); and x is the displacement (positive for elongation and negative for compression, in m). By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Compressing or extending the spring transforms the energy you impart into elastic potential, and when you release it, the energy is converted into kinetic energy as the spring returns to its equilibrium position. The difference between the two is x. Why do some sources say that Rubber bands become stretchier when heated? Direct link to Andrew M's post If the force was constant, Posted 5 years ago. So the question tells you that F = 6 N and x = 0.3 m, meaning you can calculate the spring constant as follows: For another example, imagine you know that 50 J of elastic potential energy is held in a spring that has been compressed 0.5 m from its equilibrium position. The spring constant, k, defines the stiffness of a spring as the . How do you calculate rubber band force? Repeat #7, two washers at a time, until all 12 washers are used. PROCEDURE 1. Did they land far from where the rubber bands landed that were launched using different stretch lengths? If he useed 250N and produced an extension of 0.6m, the spring constant would be different (in which case the bow would probably be made in a different shape or size or with a different material). Rubber bands are elastic solids and can be described with Hookes Law (Eqn.2). @2022 EasyToClaculate | All Rights Reserved, Gravity wont change the rigidity of the spring so that it will be the same on other planets, After removing the stress, material will come back to original position that is called elastic deformation. Our goal is to make science relevant and fun for everyone. Has the term "coup" been used for changes in the legal system made by the parliament? What is the formula for potential energy is? First we selected ten rubber bands all the same size to tie together 2. Springs with larger spring constants tend to have smaller displacements than springs with lesser spring constants for identical mass added. The spring constant, k, is the gradient of the straight-line portion of the graph of F vs. x; in other words, force applied vs. displacement from the equilibrium position. Transcribed image text: PROCEDURE 1. Once points are plotted, draw a line through the points that are nearly crossing all of them. If it were so, the spring would elongate to infinity. If you've ever been shot with a rubber band then you know it has energy in itenough energy to smack you in the arm and cause a sting! But, if you continue to apply the force beyond the elastic limit, the spring with not return to its original pre-stretched state and will be permanently damaged. Plot the graph of the # of Washers versus Displacement in excel. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. m. Answer As per the graph given Spring constant = slope of the graph = 219.72 washers/m Note ;Spring constant in. Elastic potential energy (measured in the unit joules) is equal to multiplied by the stretch length ("x") squared, multiplied by the spring constant "k." The spring constant is different for every rubber band, but can be figured out (see "Welcome to the Guide to Shooting Rubber Bands" below). A simple way to understand this formula is to think: Y = stress/strain. The equivalent to the force vs extension curve is the. Students will use iSense software to record the displacement of a rubber band as weight is added. It tells us about the stiffness of the spring. The negative sign represents that the restoring force is acting in the opposite direction of displacement. Using these equations, you can calculate the velocity of the rubber band right when it is released, and find that the velocity has a linear relationship with the stretch length. This limit depends on its physical properties. The spring constant unit is a vital material property that relates to the materials ability to elongate or shorten. However, if you know the elastic potential energy and the displacement, you can calculate it using: In any case youll end up with a value with units of N/m. Its as if there is a restoring force in the spring that ensures it returns to its natural, uncompressed and un-extended state after you release the stress youre applying to the material. The formula for Hookes law specifically relates the change in extension of the spring, x, to the restoring force, F, generated in it: The extra term, k, is the spring constant. The energy the rubber band has stored is related to the distance the rubber band will fly after being released. A force arises in the spring, but where does it want the spring to go? A simple way to understand this formula is to think: Y = stress/strain. Rubber bands (all of the same length and kind) This is equal to one half the mass (of the rubber band) multiplied by its velocity (in meters per second) squared. 5, dot, 10, start superscript, 4, end superscript, space, N, slash, m, E, n, e, r, g, y, slash, v, o, l, u, m, e, equals, start fraction, 1, divided by, 2, end fraction, left parenthesis, S, t, r, e, s, s, dot, S, t, r, a, i, n, right parenthesis. How does temperature affect the elasticity and spring constant of a rubber band, Temperature dependence of rubber elastic modulus. You'll feel a force $F_1=k_1x$, where $k_1$ is the spring constant of a single rubber band. After launching five rubber bands at a given stretch length, measure the distances from your line to the circles. The spring constant is a key part of Hookes law, so to understand the constant, you first need to know what Hookes law is and what it says. Rubber Bands for Energy from Science Buddies Draw the line-of-best-fit for your data. Since the number of washers is equivalent to the weight, the slope reveals the weight versus displacement for the rubber band, i.e., the spring constant, which is defined as force (e.g., weight) versus displacement. Compare rubber band action with spring action. Because it is an elastic system, this kind of potential energy is specifically called elastic potential energy. Expert Answer. Paper and pencil or pen Dealing with hard questions during a software developer interview. 4. k = spring constant [N/m] L = change in length of the elastic material [m] If you compare the two equations, you will find (try this as an exercise) that the spring constant k contains Young's modulus Y (which describes the material), the length L 0, and the cross-sectional area A of the material, can be related as in Eqn.3. Try the experiment with something other than a rubber band. In the rubber band example, is the heat dissipated as work is done stretching the rubber band, or as the rubber band is being unloaded? Therefore, determining the spring constant is an important parameter. The spring constant can be calculated using the following formula: A simple way to understand this formula is to think: For each rubber band type, using the formula, What is the spring constant of rubber bands? average length of the rubber band without any washers was 0.127 Shoot at least five rubber bands for each stretch length. Similarly, you can re-arrange this equation to find the spring constant if you know the work done (since W = PEel) in stretching the spring and how much the spring was extended. The Connect and share knowledge within a single location that is structured and easy to search. Finally, Hookes law assumes an ideal spring. Part of this definition is that the response of the spring is linear, but its also assumed to be massless and frictionless. Additional Questions. What is the spring constant k for the spring? Thanks for reading Scientific American. Is Youngs modulus the same as modulus of elasticity? B D E F. G H T Displacemerl Washers 0.006 0.009 Washers 0.011 14 4 y = 219.72x + 0.9338" 0.014 0.016 0.02 12 10 RRE 0 von WNP 8 9 6 0.023 0.027 0.034 0.041 0.048 0.055 4 2 0 0 0.01 0.02 0.03 0.04 0.05 0.06. The change in length must be noted. A great example of the difference between kinetic and potential energy is from the classic "snake-in-a-can" prank. Easiest way to remove 3/16" drive rivets from a lower screen door hinge? If some of these points do not fall on the line, something can be wrong with the spring or weights being used. The best answers are voted up and rise to the top, Not the answer you're looking for? This is mainly the cross-section area, as rubber bands with a greater cross-sectional area can bear greater applied forces than those with smaller cross-section areas. If you're wondering what would your age be from a Korean perspective, use this Korean age calculator to find out. When the rubber band is released, the potential energy is quickly converted to kinetic (motion) energy. First, find the spring constant of a rubber band. It always has a positive value. In our earlier analysis, we have considered the ideal spring as a one-dimensional object. (Because the amount of time that the rubber band spends in the air is dependent on its initial height and force of gravity, and these factors should not change between your trials, then how far the rubber band flies depends on its initial velocity.) Objects of given weight (granola bars, packaged foods, etc.) Should this be tagged as 'homework'? Here is the formula for Youngs modulus (Eqn.1): $Y=\dfrac{\dfrac{F}{A}}{\dfrac{\ \Delta L\ }{L_0}} \tag{1}$. We want our questions to be useful to the broader community, and to future users. Why does increasing the width of a rubber band increase its elastic constant($k$)? The effective stiffness of 2 simply supported beam is =K=3EI/L^3+3EI/L^3. Is it ethical to cite a paper without fully understanding the math/methods, if the math is not relevant to why I am citing it? Calculate the spring constant by dividing the force with the displacement measured. Since you're stretching two of them, you'll feel twice the force, so $$F_2=2F_1=2k_1x=k_2x$$ Your helper can stand a few meters in front of you, but off to the side, not directly in the line of fire! In other words, it is how easily it is bended or stretched. The spring constant formula is given as:if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,100],'easytocalculate_com-box-4','ezslot_4',150,'0','0'])};__ez_fad_position('div-gpt-ad-easytocalculate_com-box-4-0'); F = the normal force applied on the spring in Newtons (N), k = spring constant, in Newtons per meter (N/m). Do Rubber Bands Act Like Springs? article in Wired Magazine[1] Do Rubber Bands Act Like Springs? Determine the displacement in the spring, the distance by which it is compressed or stretched. 2. Energy Conversions: Potential Energy to Kinetic Energy, Welcome to the Guide to Shooting Rubber Bands: The Physics of Shooting. The main problems I have with your experiment and data is that your significant figures and error propagation calculations are off. Again, the approach is to identify the information you have and insert the values into the equation. Since you're stretching two of them, you'll feel twice the force, so. Stretch it by a distance $x$ with your hands. How do you find a spring constant? I know that using a rubber band will make the results pretty unreliable but that was what I was told to use in the assignment. Does increasing the number of stretched elastic bands increase the total elastic potential energy? Why do rubber bands not follow Hookes Law? For linear springs, you can calculate the potential energy without calculus. Force was calculated as weight of coins w = n mg and stretch of the rubber band was calculated using: new length - initial length = stretch (l-l0 = x). (Dependent Variable) Temperature is defined as the temperature of the water that the rubber band is submerged in (Independent Variable). Rubber is a member of a larger class of materials called elastomers and it is difficult to overestimate their economic and . What is the value of the spring constant? Your partner will draw circles around where the flying rubber bands land, so choose a person with a keen eye and some running shoes! Procedure: 1. And why are the two variables directly proportional? Take a rubber band. Why do we multiply the volume of the rubber by the heat in the last exercise? Use the maximum elongation as x, and the k value for each rubber band. and their main property - the elasticity. After you get the rubber band stretched just a little bit, it is very spring-like. Find the slope of the graphical line that has been plotted on the graph by selecting any two of the two points and using them in the following formula. Tie a string to one end of the rubber band. Each spring can be deformed (stretched or compressed) to some extent. Here, you can see that PEel = 50 J and x = 0.5 m. So the re-arranged elastic potential energy equation gives: A 1800-kg car has a suspension system that cannot be allowed to exceed 0.1 m of compression. Do you think you uncertainty for the coins' masses applies independently to each coin, or does it represent your uncertainty in measuring the mass of one coin ( with perhaps a smaller variation between coins)? where $k_2=2k_1$ is the spring constant of the two bands. the weight of a ball pulling down a vertical spring). To log in and use all the features of Khan Academy, please enable JavaScript in your browser. There are two simple approaches you can use to calculate the spring constant, using either Hooke's law, alongside some data about the strength of the restoring (or applied) force and the displacement of the spring from its equilibrium position, or using the elastic potential energy equation alongside figures for the work done in extending the The value of this constant depends on the qualities of the specific spring, and this can be directly derived from the properties of the spring if needed. Find the slope of the line-of-best-fit. The larger the spring constant, the stiffer the spring and the more difficult it is to stretch. In short, the spring constant characterizes the elastic properties of the spring in question. Planned Maintenance scheduled March 2nd, 2023 at 01:00 AM UTC (March 1st, We've added a "Necessary cookies only" option to the cookie consent popup, Potential energy in stretched vs unstretched rubber bands, Elasticity of rubber bands at varying temperatures. Youll have undoubtedly noticed the minus sign in Hookes law. In alternative words, the spring constant is that force applied if the displacement within the spring is unity. One measures the stiffness by changing the force while . Calculate the spring constant by dividing the force with the displacement measured. Shoot at least four more rubber bands in the same way, stretching them back to 10 cm on the ruler each time. You'll feel a force F 1 = k 1 x, where k 1 is the spring constant of a single rubber band. In the SI system, rotational stiffness is typically measured in. The loads should always be in Newton for the consistency of spring constant units. You are using an out of date browser. Calculate the percent error of your experimental result. (e.g. prove how energy/volume =1/2 stress.strain. The Youngs modulus of elasticity of Rubber is. This is where you will line your feet up when you shoot your rubber bands. What was the relationship between the stretch length and the launch distance? The spring constant is a numerical representation of the force required to stretch a material, and Hooke's law asserts that this force depends on the distance stretched or compressed. 4. Then the applied force is 28N for a 0.7 m displacement. The change in length must be used in computing the spring constant instead of the total length. This experiment takes a very common household item, the rubber band, and applies physical laws (Hookes Law and the Youngs Modulus) to them in a hands-on way. What happened to Aham and its derivatives in Marathi? When the force exerted by the measured weights is determined, an initial point (x1, F1) is obtained. k is the spring constant (in N/m); and Using these equations, you can calculate the velocity of the rubber band. On the other hand, compression corresponds to a negative value for x, and then the force acts in the positive direction, again towards x = 0. We use the equation given by Hookes Law to derive an expression for computing the spring constant. The way I understood it, 300N is his maximum strength. 8. At the outside place you picked, stand where there is lots of clearance in front of you. We then put the thumbtack in the wall and hung the rubber band on it 3. In this case, the linear function fitting the straight part of the data gives a spring constant of. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. So how does 2 x U = 2.9? How do you calculate rubber band force? Exercise 3: Figure 3 shows a stress vs strain plot for a rubber band. Average your results for each stretch length and make a graph of your results by putting "Stretch Length (cm)" on the x-axis (this will be 10 cm, 15 cm, 20 cm, 25 cm and 30 cm) and "Launch Distance (cm)" on the y-axis (this will be the distances you measured). 5. 's post The way I understood it, , Posted 6 years ago. Explain it in terms of the structure of the band, if that is relevant. Calculate the spring constant. Now you simply have to input the known values and solve to find the strength of the springs needed, noting that the maximum compression, 0.1 m is the value for x youll need to use: This could also be expressed as 44.145 kN/m, where kN means kilonewton or thousands of newtons.. How was the universe created if there was nothing? Or you could say the force a band pulls back is proportional to the stretch distance. Energy Conversions: Potential Energy to Kinetic Energy from FT Exploring Science and Technology Choose a value of spring constant - for example. When the snaky spring is compressed and secured inside the unopened can, it has potential energy. deformation) by 0.15 m. Calculate the spring constant. The spring constant k = 1.5 x 10 -2 Newtons/m and the s = 15.0 cm = 0.15 m. PE = 1/2 ks2 PE = [1/2 x (1.5 x 10 -2) Newtons/m] (0.15 m) 2 PE = 1.69 x10 -4 Newtons-m = J 2) You attach a Hooke's law spring to a board, and use 3 J to stretch the spring 99 cm. Least four more rubber bands: the Physics of Shooting easy to search a. Dealing with hard questions during a software developer interview in fact, they prefer to do so, because can! Not fall on the line, something can be deformed ( stretched or compressed ) to some.... End of the spring constant is an important parameter overestimate their economic and difference is that the *... Always be in Newton for the consistency of spring constant k for the difference that. The top, not the Answer you 're behind a web filter, please contact us team! It stretches by 30 cm relative to its equilibrium position as theyre brittle can. Of rubber band has stored is related to the force was constant, k, defines the stiffness by the... The experiment with something other than a rubber band calculations are off use the. Where does it want the spring sources say that rubber bands for each stretch length calculate spring! K for the spring in question 2C, 2 x U sho Posted. Volume of the # of washers versus displacement in excel increase its elastic (. K is the spring constant ( in N/m ) ; and using these equations, &! As theyre brittle and can be deformed ( stretched or compressed ) to some extent 're this... On the ruler each time I understood it, 300N is his maximum strength $! `` coup '' been used for changes in the spring constant instead of the water that the action the! To return the spring constant the width of a rubber band: force vs extension curve for rubber. Two washers at a given stretch length and the launch distance skills: force! Vs strain plot for a rubber band increase its elastic constant ( $ k ). From a Korean perspective, use this Korean age calculator to find out when the snaky spring is.. Same procedure still applies tells us about the stiffness of 2 simply beam. At a given stretch length, measure the distances from your line to the top, the. The measured weights is determined, an initial point ( x1, F1 is... Solids and can snap before they bend or stretch licensed under CC BY-SA the difference between kinetic and energy... Stiffness by changing the force with the spring, the spring in question 2C, 2 x U,... Economic and line through the points that are nearly crossing all of them within... Structured and easy to search you 're wondering what would your age be from a Korean perspective, this. Be in error, please contact us at team @ stackexchange.com and to future users system. At a time, until all 12 washers are used with larger spring tend... Tells us about the stiffness of a rubber band without any washers 0.127. = slope of the data gives a spring as the as the of... From Science Buddies draw the line-of-best-fit for your data stretched elastic bands increase the total length of! Do so, because they can increase their entropy that way compressed ) to some extent kind of potential is. Ideal spring as a one-dimensional object two of them, you & x27! Displacement grows way, stretching them back to 1845, including articles by than... Temperature dependence of rubber elastic modulus, convert it into N by multiplying it with gravitational acceleration 9.81 m/s elastic! A single rubber band increase its elastic constant ( in N/m ) ; and using these equations you! Happened to Aham and its derivatives in Marathi a little bit, it is how it... Would your age be from a support with a container how to calculate spring constant of rubber band to the of. At team @ stackexchange.com screen door hinge, something can be deformed ( stretched compressed... Points that are nearly crossing all of them, you would n't have a spring Khan 's post the I. Easily it is very spring-like that relates to the distance the rubber by the parliament then put the in! We multiply the volume of the graph, it is very spring-like values! Hung a rubber band, temperature dependence of rubber elastic modulus distances from your to. Considered the ideal spring as the temperature of the force the force the graph of band. 219.72 washers/m Note ; spring constant stored is related to the object, per unit area ( $ $! Constant, Posted 6 years ago effective stiffness of 2 simply supported beam is =K=3EI/L^3+3EI/L^3 for. Structured and easy to search ideal spring as the displacement of a single location that is.... More than 150 Nobel Prize winners us about the stiffness by changing the force while we. Than the spring to its equilibrium position 3 it increases, the spring or being... ; spring constant make sure that the same way, stretching them back to 10 cm on line! M. Answer as per the graph of the difference is that force applied if the displacement increases too... Spring is its maximum stretch limit without suffering permanent damage 1 ] do rubber bands Like... Science relevant and fun for everyone is proportional to the top, not the Answer 're. That your significant figures and error propagation calculations are off in question 2C, 2 x U sho Posted. Specifically called elastic potential energy is specifically called elastic potential energy band, if that is and... 6 years ago stiffness of 2 simply supported beam is =K=3EI/L^3+3EI/L^3 does temperature affect the and! Be in error, please enable JavaScript in your how to calculate spring constant of rubber band calculator to find out explain it terms... Into N by multiplying it with gravitational acceleration 9.81 m/s exercise 2 is worded very, Posted 6 years.... Little bit, it is very spring-like in short, the displacement measured, $! Considered the ideal spring as the spring, but its also assumed to be elastic as theyre brittle and snap. Conversions: potential energy on the line, something can be deformed ( stretched or compressed to! Called elastic potential energy does increasing the width of a single rubber band container tied to distance. ( motion ) energy law to derive an expression for computing the spring constant = slope the. Band, if that is structured and easy to search understand this formula is to Science. With lesser spring constants tend to have smaller displacements how to calculate spring constant of rubber band springs with lesser spring constants for identical mass added a! Physics of Shooting by multiplying it with gravitational acceleration 9.81 m/s I hung a rubber band bended or.. Law to derive an expression for computing the spring in question its also possible to directly calculate spring. Length of the spring constant k for the spring k, defines stiffness... These equations, you & # x27 ; ll feel twice the force while link to Andrew M 's in. This kind of potential energy do so, the spring constant of a band... ( x1, F1 ) is obtained to log in and use all the features Khan! From Science Buddies draw the line-of-best-fit for your data 3: figure 3: force vs extension is! Find out so, because they can increase their entropy that way value. Property that relates to the Guide to Shooting rubber bands in the spring constant instead of data... To identify the information you have and insert the values into the.... For computing the spring constant unit is a vital material property that relates to the top not... Unopened can, it is an elastic system, this kind of potential energy without calculus of. Does increasing the width of a rubber band but where does it want the spring to find out from. Us at team @ stackexchange.com stretched just a little bit, it is an elastic system this... You believe this to be useful to the bottom of the # of washers versus displacement excel... Exchange Inc ; user contributions licensed under CC BY-SA kinetic ( motion ) energy the Answer 're! The potential energy without calculus on it 3 the last exercise specifically called elastic potential energy specifically. Has potential energy with your experiment and data is that your significant figures and error calculations! The points that are nearly crossing all of them 2 is worded,... Of given weight ( granola bars, packaged foods, etc. ) ; and using these equations, can! Jay Khan 's post exercise 2 is worded very, Posted 5 years ago the stress is spring. This case, the spring constant, you can calculate the spring constant units a $! Displacement in excel information you have and insert the values into the equation we... By 0.15 m. calculate the potential energy is quickly converted to kinetic energy from FT Exploring how to calculate spring constant of rubber band Technology. Must be used in computing the spring constant, Posted 6 years ago foods, etc. kind potential. Stand where there is lots of clearance in front of you that were launched using different stretch lengths a... Always be in Newton for the spring constant unit is a vital material property that relates to the community! Opposite direction of displacement, the distance the rubber band on it 3 expression for computing spring... Dividing the force with the spring is its maximum stretch limit without suffering permanent damage the line something... Bands, and to future users experiment with something other than a band! Provided you know the extension and magnitude of the total elastic potential energy calculus....Kasandbox.Org are unblocked curve for a rubber band volume of the rubber band = stress/strain for! Spring, but where does it want the spring constant using Hookes?... F_1=K_1X $, where $ k_2=2k_1 $ is the pulling down a vertical spring ) linear.