ADVANCED LEVEL PROBLEMS ON ELASTICITY (Part-II) _ Physics Academy Online

Описание: Elasticity of a body is the property by virtue of which it resists any change in its size, shape or both, and tends to regain its configuration on withdrawal of the deforming forces. In reality, no solid body is perfectly rigid. Therefore, when subjected to a set of balanced forces or couples, a solid body at rest does not exhibit any translational and rotational motion as a whole. But different parts within the body change their relative positions with respect to each other. We say the body is deformed, and the change in its length, shape or volume is called deformation. For instance, a heavy rod suspended from the ceiling stretches a bit; a metal sphere taken to the depths of the sea shrinks a little. But because of elastic properties, the rod regains its original length when unfastened from the ceiling and laid on the floor. The sphere returns to its original volume when brought back to the sea surface.

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