In the crank and slotted lever type quick return motion mechanism shown in Fig.3.14(a), the crank \(A B\) rotates at \(120 \mathrm{rpm}\). Determine

(a) velocity of ram at \(D\),

(b) magnitude of Coriolis acceleration component, and

(c) acceleration of ram at \(D \cdot A B=200 \mathrm{~mm}, O C=800 \mathrm{~mm}, C D=600 \mathrm{~mm}, O A=300 \mathrm{~mm}\).

P on OC B @ 60 o,a x 900 mm Vba < 300 Scale: 1 cm = 100 mm (a) Configuration diagram d fdc P' po P fco fba 83 C fbp fop o,a b Vbp Vpb P Vdc Vpo d Vd Scale: 1 cm = 0.5 m/s (b) Velocity diagram P B oc Vop far p" Scale: 1 cm 2 m/s (c) Acceleration diagram (d) Direction of coriolis acceleration