Question

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`

Answer 1

Correct Answer - 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.