Rotational MotionMedium
Question
A solid sphere with a velocity (of centre of mass) v and angular velocity ω is gently placed on a rough horizontal surface. The frictional force on the sphere
Options
A.must be forward (in direction of v)
B.must be backward (opposite to v)
C.cannot be zero
D.none of the above
Solution
Frictional force always acts in such a way to prevent the sliding or slipping.
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