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A string of length L is fixed at one end...

A string of length `L` is fixed at one end and carries a mass `M` at the other end. The string makes `2//pi` revolution per second around the vertical axis through the fixed end as shown in the figure, then tension in the string is.

A

ML

B

2ML

C

4 ML

D

16 ML

Text Solution

Verified by Experts

The correct Answer is:
D
`f = 2/pi : omega =2pi f = 4 "rad/sec"`

`T sin theta = M omega^(2) R`
`R = L sin theta`
`rArr T sin theta = M omega^(2) L sin theta`
`rArr T = 16 ML`
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