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Questions  

The pulley-block system is released from rest. If the 3 kg block remains stationary, value of mass m in kg is,

a
2.5 kg
b
1.5 kg
c
1.2 kg
d
1 kg

detailed solution

Correct option is C

For equilibrium of 3 kg mass, 4m x 2 x gm +2=3 g⇒m=65kg=1.2 kg

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A constant force F = m2g/2 is applied on the block of mass m1 as shown. The string and the pulley are light and the surface of the table is smooth. Find the acceleration of m1.


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