2. If a ring, a disc, a sphere all of the same mass and radius initially at rest on top of an inclined plane (rough are released then the order in which they arrive earliest, later and latest is sphere, disc, ring respectively, why is this so, explain analytically.

Solution

\ Center of mass (C.M.) of a rolling body moves effectively with uniform translational acceleration

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Index

5.1 Rotational motion of a rigid body about a fixed axis
5.2 Rolling Motion
5.3 Law of Conservation of Angular Momentum

Chapter 6