A pulley radius 2 m is rotated about its axis by a force F=(20t-5t^(2)) newtom (where t is measured in seconds) applied tangentially. If the moment of inertia of the pulley about its axis of rotation is 10kg-m^(2) the number of rotations made by the pulley before its direction of motion reverses, is :

A pulley radius 2 m is rotated about its axis by a force F=(20t-5t^(2)

1.	A pulley radius 2 m is rotated about its axis by a force F=(20t-5t^(2)) newtom (where t is measured in seconds) applied tangentially. If the moment of inertia of the pulley about its axis of rotation is 10kg-m^(2) the number of rotations made by the pulley before its direction of motion reverses, is :
Answer» Less than 3 More than 3 but less than 6 More than 6 less than 9 More than 9 Answer :B