The max speed of follower in a cam-follower mechanism, for the given specifications

Question

1. In a cam – follower mechanism, the follower needs to rise through 20mm during 60⁰ of cam rotation, the first 30⁰ with a constant acceleration and then with a deceleration of the same magnitude. The initial and final speeds of the follower are zero. The cam rotates at uniform speed of 300 rpm. The maximum speed of the follower is     

 

                 (a) 0.60 m/s                                           (b) 1.20 m/s

                 (c) 1.68 m/s                                             (d) 2.40 m/s