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A sphere of radius 0.1 m and mass 8 pi k...

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`
The tension in the wire at the mean position when the sphere is oscillating is

A

`199.4 pi N`

B

`19.94 piN`

C

`1.994 pi N`

D

`0.1994 pi N`

Text Solution

Verified by Experts

The correct Answer is:
C
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