A sphere of radius 0.1 m and mass 8 pi kg is attached to the lower end of a steel wire of length 5 m and diameter 10^-3m. The wire is suspended from 5.22 m high ceiling of a room. When the sphere is made to swing as a simple pendulam. It just grazes the floor at the lowest point. Given Young's modulus of steel is 1.994 times 10^11 N.m^-2 What is the extension of the wire at the mean position when the sphere is oscillating?

A sphere of radius 0.1 m and mass 8 pi kg is attached to the lower end

1.	A sphere of radius 0.1 m and mass 8 pi kg is attached to the lower end of a steel wire of length 5 m and diameter 10^-3m. The wire is suspended from 5.22 m high ceiling of a room. When the sphere is made to swing as a simple pendulam. It just grazes the floor at the lowest point. Given Young's modulus of steel is 1.994 times 10^11 N.m^-2 What is the extension of the wire at the mean position when the sphere is oscillating?
Answer» 0.01 m 0.02 m 0.03m 0.04m Answer :B