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Q.

In a bicycle the radius of rear wheel is twice the radius of front wheel. If rf and rr are the radius and vf and vr are the speeds of topmost points of wheel, then

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a

vr=vf

b

vr=vf2

c

vr>vf

d

vr

answer is A.

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Detailed Solution

Velocity of the topmost point of the wheel is twice that of its centre of mass and the speed of centre of mass is same for both the wheels.
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