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A sphere can roll without slipping on a ...

A sphere can roll without slipping on a surface inclined at an angle `theta` if the fiiction coefficient is more than (2/7)g sin `theta` Suppose the friction coefficient is (l/7)g sin `theta` If a sphere is released from rest on this incline then which ofthe following are possible situations:

A

It will stay at rest

B

Itwill make pure translational motion

C

It will translate and rotate about the centre

D

The angular momentum of the spheres about its centre will remain constant

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The correct Answer is:
C
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