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Physics-

General

Easy

Question

A uniform hollow sphere is released from the top of a fixed inclined plane of inclination $37 to the power of ring operator end exponent$ and height 3m. It rolls without sliding. The speed of the point of contact of the sphere with the inclined plane when the sphere reaches half–way of the incline is

$\sqrt{42} m / s$
$\sqrt{21} m / s$
$\sqrt{84} m / s$
zero

The correct answer is: zero

Speed of point of contact in pure rolling is always zero

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