As per the Work-Energy principle, change in kinetic energy of the body = Work done on the body due to applied force.
For circular motion, force is replaced by torque T = Force x distance from center of rotation
Work done = Torque x angular displacement = T.
So area under E) Applied torque as a function of angular displacement graph will give the final kinetic energy of the body.
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In an experiment, a varying force is applied tangentially for a period of time to a...
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