Physics 1029A/B Quiz: Elasticity and Vibrations.docx
23 Apr 2014
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Elastic deformation: stress, strain, examples include twisting in response to shear stress, elongation for tensile stress and. A force acting on the surface of an extended elastic object. A change in size of the elastic object linearly proportional to the stress. compression for hydraulic stress: elastic deformations are reversible, returns to original shape when stress removed. Elastic behaviour: the response to a deformation is a restoring (elastic) force that aims at restoring resting state of the tissue: elastic behaviour can lead to vibration. Except when too soft and well connected i. e. the skin does not vibrate. Permanent plastic deformations: when restoring force can no longer prevent tissue damage when a threshold is reached. The force shown in figure 14. 1 is only position independent when sarcomere length is between 2. 0 and. In practice muscles are not position independent at any point. This is correct in this case only because we simplified the figure.
