The crank \(A B\) of a four-bar mechanism shown in Fig. 3.39 rotates with an angular speed of 100 \(\mathrm{rad} / \mathrm{s}\) and an angular acceleration of \(4400 \mathrm{rad} / \mathrm{s}^{2}\) when the crank makes an angle of \(53^{\circ}\) to the horizontal. Determine

(a) the angular acceleration of \(B C\), and

(b) linear acceleration of point \(E\). Take \(A B=75 \mathrm{~mm}, B C=80 \mathrm{~mm}, A D=125 \mathrm{~mm}\), and \(B E=28 \mathrm{~mm}\).

Transcribed Image Text:

53 B E Fig.3.39 Four-bar mechanism