UPSEE Solved Model Paper 7

A 0.1 kg mass is suspended from a wire of negligible mass. The length of the wire is 1 m and its cross-sectional area is 4 .9 × 10−7m2 If the mass is pulled a little in the vertically downward direction and released, it performs simple harmonic motion of angular frequency 140 rad s−1. If the Young's modulus of the material of the wire is n × 109Nm−2, the value of n is