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A solid sphere rolls without slipping al...

A solid sphere rolls without slipping along the track shown in the figure. The sphere starts from rest from a height h above the bottom of the loop of radius R which is much larger than the radius of the sphere r. The minimum value of h for the sphere to complete the loop is

A

2.1 R

B

2.3 R

C

2.7 R

D

2.5 R

Text Solution

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The correct Answer is:
C
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