The driving link DA is rotation uniformly at a speed of 100 r.p.m clockwise.

Question

Consider a four – bar mechanism shown in the given figure. The driving link DA is rotation uniformly at a speed of 100 r.p.m clockwise.   

       

The velocity of A will be

     (a) 300 cm/s             (b) 314 cm/s       

     (c) 325 cm/s             (d) 400 cm/s