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Q.

A rod of mass m and length l is hinged at one of its end A as shown in figure. A force F is applied at a distance x from A. The initial X

acceleration of centre of mass (a) varies with x as         

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a

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b

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c

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d

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answer is B.

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Detailed Solution

τ=Fx=Iα

acm=lα2

τ=I×2aml=F.x⇒acm∝x

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