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JEE Mains Model Paper 25

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Question : 9

Total: 90

Two bodies of mass m and 4m are attached with string as shown in the fig. The body of mass ‘m’ hanging from a string of length ‘l’ is executing oscillations of angular amplitude θ0 . While the other body is at rest. The minimum coefficient of frictionbetween the mass 4m and the horizontal surface should be

2−cosθ0
3
2cos2(
θ0
2
)
3−2cosθ0
4
3−cosθ0
4

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