First the sphere, then cylinder, then hoop the order in which they would reach the bottom of the ramp.
Particle System and Rotational Motion begins with an explanation of the concept of a rigid body, which is:
A rigid body is one in which the distances between particles do not change despite the fact that a constant force is applied to them.
A rigid body that is not fixed can move in either direction or in a combination of directions.
For a rotating rigid body, the angular velocity remains constant at all times.
The Centre of Mass is defined as the point at which the entire mass of the framework is intended to be concentrated for translational movement. The center of mass of a two-molecule framework is always on the line connecting the two particles and is located somewhere in the middle of the particles.
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