One end of a uniform rod of length l and mass m is hinged at A. It is released from rest from horizontal position AB as shown in figure. The force exerted by the rod on the hinge when it becomes vertical is

One end of a uniform rod of length l and mass m is hinged at A. It is

1.	One end of a uniform rod of length l and mass m is hinged at A. It is released from rest from horizontal position AB as shown in figure. The force exerted by the rod on the hinge when it becomes vertical is
Answer» `(3)/(2)mg` `(5)/(2)mg` 3mg 5mg Solution :`U_(1)=(1)/(2)QE` `U_(2)=QE` `U_(1),U_(2)=1 : 2` NOTE : ENERGY dissipated as HEAT `=U_(2)-U_(1)=(1)/(2)QE`

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One end of a uniform rod of length l and mass m is hinged at A. It is released from rest from horizontal position AB as shown in figure. The force exerted by the rod on the hinge when it becomes vertical is

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