In four bat mechanism, ABCD, AD is the fixed link 150 mm long. Crank AB is 40 min long and rotates at 120 rpm CW. Link AB has an angular acceleration (a) = 30 rad/sec". Link CD-80 mm oscillates about D. BC and AD are of equal length, angle BAD = 60°. Find

1. The centripetal acceleration of link BC and CD

2. The tangential acceleration of link BC and CD