A cam-and-follower system similar to the one of Fig. 6.41 uses a plate cam driven at a speed of 600 rev/min and employs simple harmonic rise and parabolic return motions. The events are: rise in 150◦, dwell for 30◦, and return in 180◦. The retaining spring has rate k = 14 kN/m with a precompression of 12.5 mm. The follower has a mass of 1.6 kg. The external load is related to follower motion Y by the equation F14 = 0.325 − 10.75Y, where Y is in meters and F14 is in kilonewtons.

Dimensions corresponding to Fig. 6.41 are R = 20 mm, r = 5 mm, lB = 60 mm, and lC = 90 mm.

Using a rise of L = 20 mm and assuming no friction, plot the displacement, cam-shaft torque, and radial component of the cam force for one complete revolution of the cam.