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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 the three objects: a ring, a solid sphere, and a thin disc. All three are rotating with the same kinetic energy, and equal torques are applied to stop them. We want to determine which object will make the least number of rotations before coming to rest. ### Step-by-Step Solution: 1. **Understanding Rotational Kinetic Energy**: The rotational kinetic energy (K) of an object is given by the formula: \[ K = \frac{1}{2} I \omega^2 ...
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