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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

4ML

D

16ML

Text Solution

Verified by Experts

The correct Answer is:
D
`Tsintheta=Momega^(2)R`
`Tsintheta=Momega^(2)Lsintheta`
From (i) and (ii)
`T=Momega^(2)L`
= `M4pi^(2)n^(2)L`
`=M4pi^(2)((2)/(pi))^(2)L`
`=16ML` .
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