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Questions  

A constant torque acting on a uniform circular wheel changes its angular momentum from A to 4A in 4sec. The torque acted on it is

a
3A4
b
A4
c
2A4
d
3A2

detailed solution

Correct option is A

τ=L2−L1t

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A body is placed on a horizontal frictionless surface. When a horizontal force F is applied on the body, it is observed that the body makes only translational motion. The which of the following points may be the positions of its centre of mass? 


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