Questions
A thin circular metal disc of radius 500mm is set rotating about a central axis normal to its plane upon raising its temperature gradually, the radius increases to 507.5 mm, the percen-tage change in the rotational KE will be–––
detailed solution
Correct option is D
Kinetic energy, For a disc Since external torque is zero, angular momentum of the disc remains conserved.Talk to our academic expert!
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A rotating solid metal sphere is heated by . If then percentage change in its moment of inertia is
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