Question

The length of a rod is 20 cm and area of cross-section 2 cm^(2). The Young's modulus of the material of wire is 1.4 xx 10^(11) N//m^(2). If the rod is compressed by 5 kg-wt along its length, then increase in the energy of the rod in joules will be

Answer 1

Explanation:

The length of a rod is

and area of cross-section

. The Young's modulus of the material of wire is

. If the rod is compressed by 5 kg-wt along its length, then increase in the energy of the rod in joules will be

Answer will be A.

hope it works out