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A solid sphere, a hollow sphere and a di...

A solid sphere, a hollow sphere and a disc, all having the same mass and radius, are placed at the top of an incline and released. The friction coefficients between the objects and the incline are same and not sufficient to allow pure rolling. The least time will be taken in reaching the bottom by

A

the solid sphere

B

the hollow sphere

C

the disc

D

all will take same time

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The correct Answer is:
D
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HC VERMA-ROTATIONAL MECHANICS-Objective -1
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  5. A circular disc A of radius r is made from an iron plate of thickness ...

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  6. Equal torques asct on the discs A and B of theh previous problem, init...

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  9. Let I1 and I2 be the moments of inertia of two bodies of identical ge...

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  10. A body having its centre of mass at the origin has three of its partic...

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  11. A cubical block of mass M and edge a slides down a rougg inclined plan...

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  12. A thin circular ring of mass M and radius r is rotating about its axis...

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  13. A man is sitting on a rotating stool with his arms outstretched. If su...

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  14. The center of a wheel rolling on a plane surface moves with a speed v0...

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  15. A wheel of radius 20 cm is pushed ot move it on a rough horizontal sur...

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  16. The angular velocity of the engine (and hence of the wheel) on a scoot...

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  17. A solid sphere, a hollow sphere and a disc, all having the same mass a...

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  18. A solid sphere, a ring and a disc all having same mass and radius are ...

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