Two bodies of masses 2 kg and 3 kg are connected by a steel wire of cross-section 2 mm square going over a smooth pulley as shown in Fig. The longitudinal strain in the wire is:

Q: Two bodies of masses 2 kg and 3 kg are connected by a steel wire of cross-section 2 mm square going over a smooth pulley as shown in fig. The longitudinal strain in the wire is: (g = 10 m/s2 ,Y = 2 × 1011 N/m2)

Numerical

(a) 2 × 10-7

(b) 4 × 10-7

(c) 3 × 10-5

(d) 4 × 10-5

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Ans: (c)