In the toggle mechanism shown in Fig.2.79, the crank \(O A\) rotates at \(180 \mathrm{rpm}\) and the slider is constrained to move on a horizontal path. \(O A=180 \mathrm{~mm}, B C=240 \mathrm{~mm}, A B=360 \mathrm{~mm}\), and \(B D=540 \mathrm{~mm}\)

Find

(a) velocity of slider \(D\),

(b) angular speed of links \(A B, B C\) and \(B D\),

(c) velocity of rubbing on the pins of diameter \(30 \mathrm{~mm}\) at \(A\) and \(D\), and

(d) torque applied to crank \(O A\) for a force of \(2 \mathrm{kN}\) at \(D\).

Transcribed Image Text:

45 360 mm B 105 mm) Fig.2.79 Toggle mechanism