Calculate the increase in energy of a brass bar of length 0.2 m and cross-sectional area 1 cm2 when compressed with a force of 49 N along its length.
Young’s modulus of brass = 1.0 × 1011 Nm-2.
1
U = 1.9 × 10-5 J
2
U = 3.4 × 10-5 J
3
U = 2.4 × 10-5 J
4
U = 2.9 × 10-5 J