[Solved] 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 samelinear speed and v_1 = 3 m/s, the v_2 in m/s is (g = 10 m/s^2) - - JEE (Advanced) 2015 Paper-1