Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 11
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A Hollow Sphere, a Solid Sphere, a Disc and a Ring All Having Same Mass and Radius Are Rolled Down on an Inclined Plane. - Physics

One Line Answer
Short Note

A hollow sphere, a solid sphere, a disc and a ring all having same mass and radius are rolled down on an inclined plane. If no slipping takes place, which one will take the smallest time to cover a given length?

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Solution

The body with the smallest moment of inertia will roll down taking the smallest time. Here, the solid sphere has the lowest moment of inertia among all the other bodies. So, it will roll down taking the least time.

Concept: Values of Moments of Inertia for Simple Geometrical Objects (No Derivation)
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APPEARS IN

HC Verma Class 11, 12 Concepts of Physics 1
Chapter 10 Rotational Mechanics
Short Answers | Q 21 | Page 192
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