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There are two identical balls of same material, one being solid and the other being hollow. How will you distinguish them without weighing?

a)

By spinning them using equal torques

b)

By determining their moment of inertia

c)

By rolling them down an inclined plane

d)

By any one of these methods



Question ID - 53273 | SaraNextGen Top Answer

There are two identical balls of same material, one being solid and the other being hollow. How will you distinguish them without weighing?

a)

By spinning them using equal torques

b)

By determining their moment of inertia

c)

By rolling them down an inclined plane

d)

By any one of these methods

1 Answer
127 votes
Answer Key / Explanation : (d) -

(d)

Solid and hollow balls can be distinguished by any of the three methods. . When torques are equal, angular acceleration  of hollow must be smaller than  of solid. Similarly, on rolling, solid ball will reach the bottom before the hollow ball

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