The dimensions of a four-bar mechanism are:
\(A D=300 \mathrm{~mm}, B C=A B=360 \mathrm{~mm}, C D=600 \mathrm{~mm}\). The link \(C D\) is fixed and \(\angle A D C=60^{\circ}\). The driving link \(A D\) rotates uniformly at a speed of \(120 \mathrm{rpm}\) clockwise and the constant driving torque is \(60 \mathrm{Nm}\). Determine

(a) the velocity of the point \(B\) and angular velocity of \(B C\),

(b) actual mechanical advantage and the resisting torque if efficiency of the mechanism is 75 percent.

Transcribed Image Text:

60 D B Scale: 1 cm 100 mm (a) Configuration diagram C Scale: 1 cm = 1 m/s (b) Velocity diagram b ba