1.

A solid sphere, disc and hollow sphere of same masa and radius are placed at the top of an inclined plane. Surface is sufficiently rough to provide pure rolling. All the objects are released from a state of rest.

Answer»

Solid sphere reaches the BOTTOM FIRST
Disc reaches the bottom first
Hollow sphere reaches the bottom first
All three objects reach the bottom simultaneously.

Solution :Given surface is SMOOTH hence all the three objects will have same acceleration which is equal to `gsintheta`. Hence all objects will reach the bottom simultaneously. Option (d) is correct.


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