किसी पिंड का घूर्णन त्रिज्या (k) निम्नलिखित में से किस पर निर्भर नहीं करता है?

The angular speed of a flywheel is increased from 600 rpm to 1200 rpm in 10 s. The number of revolutions completed by the flywheel during this time is:

If F = 6î - 3ȷ + 2k̂ is a force acting on a point P whose position vector with respect to origin is r = 2î + ȷ - k̂, then the torque τ acting on the point is: