Average these 11 values for k together to get your spring constant value for part ii. Experiment 9 spring constant aim to find the force. A spiral spring, a set of weights, a weight hanger, a balance, a stop watch, and a two meter stick. For a system such as shown in figure 1, the springs elongation, x x0, is dependent upon the spring constant, k, and the weight of a. Day two prelab exercise describe a method with which to determine whether a rubber band obeys hookes law. Remote work advice from the largest allremote company. In this lab, the motion sensor measures the position of the oscillating mass, and the force sensor is used to determine the spring constant. Design and fabrication of a spring constant testing machine and determination of spring constant of a compression spring. Nov 25, 2016 to find the force constant of a helical spring by plotting a graph between load and extension physics lab manualncert solutions class 11 physics sample papers aim to find the force constant of a helical spring by plotting a graph between load and extension. Nov 14, 2014 table 1 represents the data collected when the hookes law experiment was performed on three different types of elastic bodies. To determine the spring constant of a spring by a static method, and b dynamic method. To measure the spring constant of a spring using two different methods. Hypothesis the change in length of spring is directly proportional to the applied so that it will cause greater change in.
Pdf design and fabrication of a spring constant testing. It should help you understand how to work scientifically. This is an example of a common experiment used to investigate hookes law. If a spring is permanently deformed by something like crushing or overstretching, it will.
During the conduction of this lab, several new phrases that were defined came up. You will design an experiment to determine the spring constant of given spring and use that to predict the frequency of oscillations. The values in the first column represent the force applied on the body in newtons n. It is also possible to study the effects, if any, that amplitude has on the period of a body experiencing simple harmonic motion. Of course, hookes law only remains true when the material is elastic. Hookes law experiment hookes law experiment and analysis.
Experiment 6 the spring constant determination purpose. Hookes law helps explain the first parts of this experiment. The objective of the experiment is to determine the spring constant of a spiral spring by hookes law and by its period of oscillatory mo tion in response to a weight. In the third part of the experiment we will determine acceleration due to gravity by using a simple pendulum. The rest position x of the pointer p on the scale is the. The constant is known as the force constant of the spring. The spring in the shock absorber will, at a minimum, have to give you 2,450 newtons of force at the maximum compression of 0. A spring of length l 1 is hung up by a bracket as shown in figure 1. In the static method, we explored hookes law, fx kx, by recording stretch length for various masses hung on a spring and obtained ks 1. For each measurement of the period t, determine the spring constant k using t 2. We will determine the spring constant, for an individual spring using both hookes law and the properties of an oscillating spring system. Investigating hookes law forces ks3 physics revision. The helical spring, is the most commonly used mechanical spring in which a wire is wrapped in a coil that resembles a screw thread. Add 50 g to the mass hanger and determine the change in position caused by this.
Peckham physics 307 fall 1983 digitized and revised, fall 2005 abstract the spring constant of a screendoor spring was determined both statically, by. A spring constant is the measure of the stiffness of a spring. Twisted helical torsion springs are used in engine starters and hinges. Elastic force acts in the opposite direction of the external force.
The fact that the spring constant is a constant it is a property of the spring itself, shows that the relationship is linear. Spring constant meaning in the cambridge english dictionary. Procedure in this lab, you will observe a mass on a spring and. Springs tend to have a higher spring constant, and once they are deformed they are a great example of newtons third law of motion stating that for every force there is an equal opposite force. If a mass m is attached to the lower end of the spring, the spring stretches a distance of d from its initial position under the influence of the load weight. It is also possible to study the effects, if any, that amplitude has on the period of a. Feb 03, 2014 this video belongs to me and i have all rights towards the video. Static method and dynamic method, to decide the spring constant of a spring. Apparatus stand meter rule two springs with di erent spring constants slotted mass set stopwatch 1 single spring objective calculate the spring constant of the two springs using hookes law. The purpose of this lab experiment is to study the behavior of springs in static and dynamic situations. Hookes law objective use springs to investigate hookes law, springs in series and parallel, and oscillations. The primary purpose of the lab is to study hookes law and simple harmonic. Place a stool under the hanger and measure the initial height x0 above the stool.
The small spring constant of the torque spring precluded the determination of density from the impact tests. Hookes law experiment report done by yovaphine wijaya 11 science 1 aim to investigate hookes law for simple strings or rubber. Heres 12 spring science activities that are super easy to set up. Hang the spring from the pendulum clamp and hang the mass hanger from the spring.
General science laboratory 1110l lab experiment 5 the. Procedure in this lab, you will observe a mass on a spring and, from this, determine the value of k for that spring. One of the goals of science is the development of physical and mathematical models to describe physical systems by using observational and experimental data. Static and dynamic analysis of spring constant measurement for mechanical laboratory engineering program. Hookes law utk department of physics and astronomy. Physical sciences 2 and physics e1ax, fall 2014 experiment 5 7 now hang the mass stand with the extra mass to the stiffer spring. If a weight, w mg, is hung from one end of an ordinary spring, causing it to stretch a distance x, then an equal and opposite force, f, is created in the spring which opposes the pull of the weight. Spring constant experiment purpose the purpose of this experiment is to perform two method. Various springs of different construction are included, so students can better understand the physical meaning of the spring constant. Pendulum clamp, aluminum pole, large clamp, assorted masses, mass hanger, spiral spring, ruler, and 2 meter stick. Objectives after todays experiment, you will be able to. To determine the spring constant of a spiral spring by hookes law and by its period of oscillatory motion in response to a weight.
We can then use the force of the cord in hookes law to find the spring constant of the cord. Physics lab report 2 hookes law and simple harmonic. The second, third and fourth column represents the extension of the bodies after the. Note that in this equation m is the total mass attached to the spring. Spring constant measurement static dynamic method weight. General science laboratory 1110l lab experiment 5 the spring.
The gradient of straight line was then used to calculate the spring constant, k, for the spring used in this experiment. This is the force, expressed in newton, which will produce an elongation of one meter in the spring. To determine spring constant of a spiral spring by oscillation method. In this experiment you will investigate simple harmonic motion for a spring and mass system.
The forces supplied by the masses are due to their weight which can be found by. In this experiment, the stretch of a spring changes as the force applied on the spring changes. Predict qualitatively how will the angular frequency will change compared to the case where you had a spring that was not as stiff. Pdf the spiral spring find, read and cite all the research you need on. The spring constant of a screendoor spring was determined both statically, by. Additional instructions are included below to guide you through the experiment, and you can add your own steps. Mechanical behavior of a spring arizona state university. To find the force constant of a helical spring by plotting a graph between load and extension physics lab manualncert solutions class 11 physics sample papers aim to find the force constant of a helical spring by plotting a graph between load and extension. Hookes law will be verified for a spring and the force constant will be calculated by measuring the amount the spring is stretched when various masses are hung on it.
To find the spring constant of the given helical spring using load extension method also to determine the mass of the given body. Hookes law elastic force occurs in the spring when the spring is being stretchedcompressed or deformed. A helical spring, is a mechanical device which is typically used to store energy and subsequently release it, to absorb shock, or to maintain a force between contacting surfaces. Theory measuring the stretching produced by different loads, added to the spring, tests the elasticity of a spring. Therefore in order to verify hookes law, you must verify that the force f and the distance the spring is stretched are proportional to each other that just means linearly dependant on each other, and that the constant of proportionality is k. If the bestfit line is linear, then the spring extension is directly proportional to the applied force, and the constant of that proportionality can be obtained from the. To determine the spring constant of a spiral spring. When determining the spring constant, be sure the spring has an initial load sufficient to separate the coils and remove. F is a restoring force, k is a constant of proportionality and x is the distance the. As the stretch increases, the force increases, and it is a constant increase. Pdf experiment 6 helical spring mahitha girish academia. Theory when a load f suspended from lower free end of a spring hanging from a rigid support.
A spiral spring, a set of weights, a weight hanger, a balance, a stop watch, and a lab scale. Comment on how the spring constant of an auto spring compares to the spring constant you measured today. Conclusion in this experiment the stretch of a spring changes. Static method is used to measure how long the spring extended after load applied. Thus it measures the time for the masses and thus the spring, to complete a whole period. Environmental education resources to commemorate earth days 50th anniversary. This video belongs to me and i have all rights towards the video. The period of oscillation, t, for a mass on a spring is given by 1 where m is the oscillating mass and k is the spring constant. Determining the spring constant of our bungee cord your name and your lab partner. November 1, 2016 abstract the goal for the overall bungee challenge is to create an ideal bungee experience for an egg, where it does not. In order to figure out how to calculate the spring constant, we must remember what hookes law says. The spring is then compressed or stretched and released.
Conclusion in this experiment the stretch of a spring. Experiment 10 about its rest or equilibrium position. Apparatus spring, a rigid support, slotted weights, a vertical wooden scale, a fine pointer, a hook. F kx 1 where fis the force, xis the displacement of the free end of the spring and kis a constant that depends on the internal properties of the spring.
This is because the gradient is equal to 1 the value can be compared to the theoretical value by using hookes so as to verify the result whether it is plausible or not. Hooke, depotentia restitutiva 1678 we have measured the strength k of a mechanical spring using both static and dynamic methods. Experiment339 f measurement of spring constant by static and dynamic methods sarmistha sahu dept. The dynamic method is used to measure the frequency of the back and forth movement at a regular speed known as oscillation with the weight. Lets study how we can use the helical spring to do our experiment. Set up the apparatus as in the diagram add a 10 g mass to the. Excel can also be used to obtain k by fitting a linear trendline to the forcedeflection data.
In this form, it is apparent that if a plot of f as a function of. The purpose of this experiment was to measure and compare the spring constant of a steel spring. The spring constant of a screendoor spring was determined both statically, by measuring its elongation when subjected to loading, and dynamically, by measuring the period of a mass hung from one end and set into vertical oscillation. Experiment 9 spring constant aim to find the force constant of a helical spring by plotting graph between load and extension. The constant kis called the spring constant and is always a positive number.
This elastic behavior of springs can be explained through hookes law and formula 1. The kinetic energy transferred to a pascar is measured and compared to the potential energy lost by the spring. Peckham physics 307 fall 1983 digitized and revised, fall 2005 abstract the spring constant of a screendoor spring was determined both statically, by measuring its elongation when subjected to loading, and dynamically, by measuring the. For the shm part of the experiment, a single mass of 4kg was.
Your task is to design an experiment to determine the relationship between the applied force and spring extension, and if the relationship is linear as suggested by hookes law, determine a value for the spring constant. Spring constant measurement static dynamic method free download as pdf file. Page 1 to find the force constant and effective mass of a helical. Are you ready to see your childrens faces light up with wonder. Here k is the spring constant which is a quality particular to each spring. Table 1 represents the data collected when the hookes law experiment was performed on three different types of elastic bodies. Experiment 9 spring constant aim to find the force constant. If a weight, w mg, is hung from one end of an ordinary spring, causing it to stretch a distance x, then an equal and opposite force, f, is. It tries to bring the deformed end of the spring to the original equilibrium position. The period of oscillation is measured, and compared to the theoretical value. The kinetic energy transferred to a pascar is measured and compared to the potential energy lost by. How to calculate a spring constant using hookes law.
To find the force constant of a helical spring by plotting graph between load and extension. Within the experiment, in the first two parts we will determine the spring constant of a spring using two different methods. To find the force constant of a helical spring by plotting. Objectives the main objective of this experiment is to show hookes law of spring, calculate the total energy. The springs restoring force acts in the opposite direction to its elongation, denoted by the negative sign. Hypothesis the change in length of spring is directly proportional to the applied so that it will cause greater change in length of the spring for greater force.
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