Hysteresis :: essays research papers

Aim To investigate the pattern in the amount by which a hanging piece of chewyized stretches when a load force is applied and the amount by which the stretch is reduced when the load is removed.Aim (in simpler terms) To determine the family relationship between the force on a rubber band and its stretch, both during extension and retraction.Hypothesis Not required.Method1)Hang a piece of expandable on a clamp stand. Ensure the elastic is new. 2)Clamp a ruler using the clamp stand. Ensuring the markings on the ruler is as close to the elastic as possible. -Draw a diagram3) Measure the length of the elastic and record the data.4) Hang masses on the elastic until it reaches it point of irreversible distortion. shoot down note of this weight do not hang more than this weight in the experiment.5)hyperkinetic syndrome a weight of 100N (change appropriately). Wait for a few seconds for the placement to stabilise. Measure the length of the elastic and record the data. Special care mus t be taken to ensure that when the mass is added the elastic should not retract.6)Add more weights, till the total weight is close to its point of irreversible distortion or till there are no more weights.7) despatch the weights one by one. Wait a couple of seconds for the system to stabilise. Measure the length of the elastic and record the data. Ensure that when the mass is removed the elastic should not be allowed to stretch further.8)Repeat, till there is no more mass on the elastic. Measure the length of the elastic.EquipmentElastic Clamp stand ruler Different weights or a weight hangerVariablesIndependent Mass hung on elasticDependant Length that the elastic extends or retracts.Controlled Same conditions thus the demeanor of the elastic is constant Same equipment ResultsForce (N)Length of elastic (m)Length that elastic was stretchedDuring extensionDuring retractionFor extensionFor retraction011.200.21001.51.40.50.4..........................................900....1000....Note To find the length that the elastic was stretched. Simple subtract the value During extension by the original length of elastic. Then salvage the result in the column For extension for the appropriate weight. Repeat for retraction.Construct a graph of this data. For ease of data interpretation, graph force on y axis and length that elastic was stretched (that is the column For extension and For retraction) on x axis. Also possible to have intervals of 0.98 N on y axis so that value of mass in grams can be plotted accurately (assuming g=9.8 m/s2)Plot the points and draw a smooth curve.