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Q.

A disc is rolling without slipping on horizontal surface as shown in figure. Point C is the centre of disc. Point A and B are equidistant from centre of disc. Let VA, VC and VB are linear velocities of points A, B and C respectively. Then the relation between VA, VB and VC is:

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a

VA > VB > VC

b

VA  > VC > VB

c

VB  > VC > VA

d

VA < VB < VC

answer is B.

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Detailed Solution

In case of pure rolling, all points on the disc instantaneously rotate about the point of contact. The more the distance of the point from point of contact, the more is its velocity hence, vA>vC>vB.

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A disc is rolling without slipping on horizontal surface as shown in figure. Point C is the centre of disc. Point A and B are equidistant from centre of disc. Let VA, VC and VB are linear velocities of points A, B and C respectively. Then the relation between VA, VB and VC is: