![]() ![]() ![]() Similarly in rotational motion, a body rotating about an axis opposes any change desired to be produced in its state. torque is applied on the rigid body which means ‘moment of inertia’ describes the state of change body in rotational motion. Similarly in case of rotational motion if the moment of inertia is the high large amount of rotational force i.e. As the mass of the body is high the inertia is also high and hence requires more force to move it (to change the state of that body). ![]() In the case of linear motion, the mass of the object determines the inertia of the body. The inertness or inability of a body to change its state of rest or uniform motion by itself is called inertia. The motion of a wheel of a train about its axle is rotational motion. A rigid body is said to be in rotational motion about a fixed axis when its particles generate concentric circles with the same angular velocity but different linear velocities. The motion of a car is the translator in nature. A rigid body can undergo both translational and rotational motion.Ī rigid body is said to have translator motion if it moves bodily from one plate to another. Moment of Inertia and Theorem of Parallel and Perpendicular AxesĪ rigid body is defined as a solid body in which the particles are compactly arranged so that the inter-particle distance is small and fixed, and their positions are not disturbed by any external forces applied on it. ![]()
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