Physics (5th Edition)
Physics (5th Edition)
5th Edition
ISBN: 9780321976444
Author: James S. Walker
Publisher: PEARSON
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Chapter 8, Problem 62GP

BIO Bird Tendons Several studies indicate that the elastic properties of tendons can change in response to exercise. In one study guinea fowl were divided into a group that ran for 30 minutes a day on a treadmill, and a control group that was kept in their cages. After 12 weeks, the researchers measured the mechanical properties of the gastrocnemius tendon in each bird. The results for one control bird and one treadmill bird are shown in Figure 8-39. (a) Treating the tendon as an ideal spring, what is the force constant for the control bird? (b) By how much does the control bird’s tendon need to be stretched in order to have the same amount of stored energy as the tendon of the treadmill bird at a deformation of 1.0 mm?

Chapter 8, Problem 62GP, BIO Bird Tendons Several studies indicate that the elastic properties of tendons can change in

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Part A Scallops use muscles to close their shells. Opening the shell is another story--muscles can only pull, they can't push. Instead of muscles, the shell is opened by a spring, a pad of a very elastic biological material called abductin. When the shell closes, the pad compresses; a restoring force then pushes the shell back open. The energy to How much elastic potential energy is stored? Express your answer with the appropriate units. open the shell comes from the elastic energy that was stored when the shell was closed. (Figure 1) shows HA ? smoothed data for the restoring force of an abductin pad versus the compression. When the shell closes, the pad compresses by 0.15 mm. U; = Value Units Submit Request Answer Provide Feedback Figure 1 of 1 Restoring force (N) 2.5 - 2.0 1.5 1.0 0.5 0.05 0.10 0.15 0.20 Compression (mm) Pearson
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Chapter 8 Solutions

Physics (5th Edition)

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Kinetic Energy and Potential Energy; Author: Professor Dave explains;https://www.youtube.com/watch?v=g7u6pIfUVy4;License: Standard YouTube License, CC-BY