A rope is wound around a hollow cylinder of mass 3 kg and radius 40 cm. What is the angluar acceleration of the cylinder if the rope is pulled with a force of 30 N?
As we learnt in
This can be calculated by using either
= perpendicular distance from origin to the line of force.
= component of force perpendicular to line joining force.
Analogue of second law of motion for pure rotation -
Torque equation can be applied only about two point
(i) centre of motion.
(ii) point which has zero velocity/acceleration.
This option is incorrect.
This option is correct.
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