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A ring, a solid sphere and a thin disc o...

A ring, a solid sphere and a thin disc of different masses rotate with the same kinetic energy. Equal torques are applied to stop them. Which will make the least number of rotations before coming to rest?

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To solve the problem, we need to analyze the rotational motion of a ring, a solid sphere, and a thin disc, all rotating with the same kinetic energy and subjected to the same torque until they come to rest. ### Step-by-Step Solution: 1. **Understanding Kinetic Energy**: The kinetic energy (KE) of a rotating object is given by the formula: \[ KE = \frac{1}{2} I \omega^2 ...
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