Question

07. A disc of radius R, rotating with angular speed oo about its axis, is
placed gently on a smooth table vertically (Fig). If B is mid-point of
OA, the linear speeds of the points A, B, C are :ं​

Answer 1

Velocity of point A=

vA=Rω0

towards right

Velocity of point B=

vB=Rω0

towards left

Velocity of point C=

vC=2Rω 0

towards right

Since the disc is placed on a frictionless table, it will not roll. This is because the presence of friction is essential for the rolling of a body.

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