The low-speed disk cam with oscillating flat-faced follower is driven at a constant shaft speed. The displacement curve for the cam has a full-rise cycloidal motion, defined by Eq. (6.13)

with parameters L = 30◦, β = 150◦, and a prime circle radius R0 = 30 mm; the instant pictured is at θ2 = 112.5◦. A force of FC = 8 N is applied at point C and continues at 45◦ from the face of the follower as shown. Use the virtual-work approach to determine the torque, T12, required on the crankshaft at the instant shown to produce this motion.

Figure P11.31 RO2O3 = 50 mm, RB = 42 mm, and RC =

150 mm.