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A disc is rolling without slipping with ...

A disc is rolling without slipping with angular velocity `omega`. P and Q are two points equidistant from the centre C. the order of magnitude fo velocity is

A

`v_Q gt v_C gt v_P`

B

`v_P gt v_C gt v_Q`

C

`v_P = v_C, v_Q = v_C/2`

D

`v_P lt v_C gt v_Q`

Text Solution

Verified by Experts

The correct Answer is:
B
(b) Note: in pure rolling, the point of contact is the
instantaneous centre of rotation of all the particles fo
the disc. On applying `v = romega`
We find `omega` is same for all the particles then `v prop r.`
Farther the particcles from O, higher is its velocity.
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Knowledge Check

  • A disc is rotating with angular velocity omega . If a child sits on it, what is conserved?

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    B
    Angular momentum
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