The Lvai type-A train of Fig. 7.38 has N2 = 20T and N4 = 32T. (a) If

The Lévai type-A train of Fig. 7.38 has N2 = 20T and N4 = 32T.

(a) If the module is m = 6 mm/tooth, find the number of teeth on gear 5 and the crank arm radius.

(b) If gear 2 is fixed and internal gear 5 rotates at 10 rev/min ccw, find the speed and direction of rotation of the arm.