JEE Advanced 2015 Paper 1 Physics Q4

Physics · Work, Energy & Power · Rotation

Problem

Two identical uniform discs roll without slipping on two different surfaces

AB

and

CD

(see figure) starting at

A

and

C

with linear speeds

v_1

and

v_2

, respectively, and always remain in contact with the surfaces. If they reach

B

and

D

with the same linear speed and

v_1=3\,\mathrm{m/s}

, then

v_2

\mathrm{m/s}

is (

g=10\,\mathrm{m/s^2}

)