1.

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

Answer»

`0^(@)`
`30^(@)`
`45^(@)`
`60^(@)`

Solution :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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