3.45 For the mechanism in the posture shown, where
RAO4 = 40 mm, pinion 4, is rolling without slipping on rack 3 at poinß. Determine the first-order
kinematic coefficients of rack 3 and pinion 4. If
VA = 150i mm/s, determine the angular velocities
of rack 3 and pinion 4, and the velocity of point
E. Also, determine the velocity along rack 3 of
the point of contact between links 3 and 4 (that is,
point B).
E
B
y
041
3
4
2
1
1
Figure P3.45 p4 = 20 mm, and REB = RBA.