A pulley of radius is rotated about its axis by a force newton (where is measured in seconds) applied tangentially. If the moment of inertia of the pulley about its axis of rotation is , the number of rotations made by the pulley before its direction of motion if reversed, is |
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a) |
Less than 3 |
b) |
More than 3 but less than 6 |
c) |
More than 6 but less than 9 |
d) |
More than 9 |
A pulley of radius is rotated about its axis by a force newton (where is measured in seconds) applied tangentially. If the moment of inertia of the pulley about its axis of rotation is , the number of rotations made by the pulley before its direction of motion if reversed, is |
|||||||
a) |
Less than 3 |
b) |
More than 3 but less than 6 |
c) |
More than 6 but less than 9 |
d) |
More than 9 |
(b) To reverse the direction (work done is zero) is zero at No. of revolution is less than 6 |