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Q.

A wheel of bicycle is rolling without slipping on a Level road. The velocity of the centre of mass is Vcm; then true statement is

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a

the velocity of point A is2 Vcm. and velocity of point B is zero

b

the velocity of point A is zero and velocity of point 'B is 2VCM.

c

the velocity of point A is 2Vcm, and velocity of point B is - Vcm

d

the velocities of both A and B are vcm

answer is A.

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Detailed Solution

The velocity of centre of mass of a body rolling without slipping is given by Vcm=RωVelocity of point A VA=Vcm+Rω                 =Vcm+Vcm=2VcmVelocity of point B,vB=vcm−Rω                         =vcm−vcm=0
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