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The pulley & strings shown in figure are...

The pulley & strings shown in figure are smooth and of negligible mass. For the system to remain in equilibrium, the angle `theta` should be

A

`0^(@)`

B

`30^(@)`

C

`45^(@)`

D

`60^(@)`

Text Solution

Verified by Experts

The correct Answer is:
C
For equilibrium of mass m, T=mg ..........(1)
For equilibrium of mass `sqrt2m`
`2T cos theta =sqrt2mg .........(2)`
Solve (1) & (2)
`cos theta=1/sqrt2, theta=45^(@)`.
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