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JEE PHYSICS MCQ: SYSTEM OF PARTICLES

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The motor of an engine is rotating about its axis with an angular velocity of 100 rpm100 \mathrm{~rpm}. It comes to rest in 15 s15 \mathrm{~s}, after being switched OFF. Assuming constant angular deceleration, what are the numbers of revolutions made by it before coming to rest?
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Correct option: A
12.5
Option A (12.5) is correct because it is the number of revolutions calculated using the angular deceleration and initial angular velocity.

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