The property of material bodies to regain its original size on the removal of deforming force is called elasticity. 1. What are the values of

Question

The property of material bodies to regain its original size on the remaoval of deforming force is called elasticity.

1. What are the values of

• Young’s modulus for a perfectly rigid body
• Rigidity modulus of a liquid

2. Why do we prefer steel to copper in the manufacture of spring?

3. How much should the pressure on a littre of water be changed to compress it by 0.10%?
(B = 2.2 × 10⁹N/m²)

Answer 1

1. The values:

• infinity
• Zero

2. Young’s modulus of steel is more than that of copper. Hence steel is more elastic than copper.

3.