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Arrangem ent in which the pulley are smo...

Arrangem ent in which the pulley are smooth and strings are of negligible mass. For the system to remain in equilibrium, the angle 0 should be .....

A

`30^(@)`

B

`45^(@)`

C

`0^(@)`

D

`60^(@)`

Text Solution

Verified by Experts

The correct Answer is:
B
(b ) `45^(@)`

for block of mass m
for block of mass `sqrt(2 ) m`
`cos theta = (sqrt(2))/( 2T) xx mg`
`=(1)/(sqrt(2) mg ) xx mg = (1)/(sqrt(2 ))`
`theta = 45^(@)`
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