1.

A circular disc rolls on a horizontal floor without slipping and the centre of the disc moves with a uniform velocity v. Which of the following values the velocity at a point on the rim of the disc can have?

Answer»

v
`-v`
2v
zero

Solution :Velocity of the point of CONTACT of the circular DISC with respect to the horizontal FLOOR = v - v = 0
Velocity of the farthest point = v + v = 2v
Horizontal velocity of the left or right end point
= velocity of the CENTRE of the disc
= v
The option A, C and D is correct.


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