Question 76
If moment of inertia of a system decreases while rotating freely, what happens to angular momentum?
Question 77
A rotating system has constant angular velocity. What can be said about net torque?
Question 78
Which object has the smallest moment of inertia for same mass and radius?
Question 79
A solid sphere and a hollow cylinder of same mass and radius are subjected to same torque. Which has greater angular acceleration?
Question 80
An oxygen molecule has mass 5.30×10⁻²⁶ kg and moment of inertia 1.94×10⁻⁴⁶ kg·m². If rotational KE is two-thirds of translational KE, and mean speed is 500 m/s, what is average angular velocity?