Physics XI Content

5. What is the counterpart of the mass and force in rotational motion?

We know, I =mr2. This is the relation between moment of inertia (I) and mass (m). Hence, the moment of inertia (I) is the counter part of the mass in rotational motion.
Again, Torque = F x r. This is relation between torque and linear force. Hence, torque is the counter part of the force in rotational motion.