3. [Ans. 50 rad/s; 21 rad/s] Locate all the instantaneous centres of the mechanism as shown in Fig. 6.29. The lengths of various links are AB 150 mm; BC= 300 mm ; CD 225 mm; and CE = 500 mm. When the crank AB rotates in the anticlockwise direction at a uni- form speed of 240 r.p.m. ; find 1. Velocity of the slider E, and 2. Angular velocity of the links BC and CE. D B 2 30° A 3 300 mm 100 mm C 5 6 wwwwwww E mmmm