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Q.

A solid sphere of radius R is resting on a smooth horizontal surface. A constant force F is applied at a height h from the bottom. Choose the correct alternative :

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a

Sphere will always slide whatever be the value of h

b

Sphere will roll without slipping when h1<4R

c

Sphere will roll without slipping if h = 1.4 R

d

None of the above

answer is C.

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Detailed Solution

For pure rolling a = Rα
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