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Rotational Motion question

2011 · Shift 0 · Q74
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Rotational Motion question

2011 · Shift 0 · Q74

JEE MainPhysicsRotational MotionMCQ+4 / −1
A pulley of radius 2m2m2m is rotated about its axis by a force F=(20t−5t2)F = \left( {20t - 5{t^2}} \right)F=(20t−5t2) newton (where ttt is measured in seconds) applied tangentially. If the moment of inertia of the pulley about its axis of rotation is 10kg10kg10kg-m2{m^2}m2 the number of rotation made by the pulley before its direction of motion is reversed, is:
  1. A
    more than 333 but less than 666
  2. B
    more than 666 but less than 999
  3. C
    more than 999
  4. D
    less than 333
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