A solid sphere of mass 
and radius
is placed on a rough horizontal surface. It is struck by a horizontal cuestick at a height 
above the surface. The value of 
so that the sphere performs pure rolling motion immediately after it has been struck is
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a) |
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b) |
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c) |
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d) |
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Question ID - 100232 | SaraNextGen Answer A solid sphere of mass and radius is placed on a rough horizontal surface. It is struck by a horizontal cuestick at a height above the surface. The value of so that the sphere performs pure rolling motion immediately after it has been struck is
a)
b)
c)
d)
A solid sphere of mass and radius is placed on a rough horizontal surface. It is struck by a horizontal cuestick at a height above the surface. The value of so that the sphere performs pure rolling motion immediately after it has been struck is
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a) |
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b) |
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c) |
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d) |
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1 Answer - 5876 Votes
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Answer Key : (c) -
Answer Link|
(c) Let
From the above two equations, From the condition of pure rolling,
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be the velocity of the centre of mass of the sphere and 
be the angular velocity of the body about an axis passing through the centre of mass
