1. The Figure below shows the input shaft AB of a simple gear reducer. The input torque is T, = 60 Nm. The shaft is supported in the housing by bearings at A and B. The pitch radius of the spur pinion G₁ is r₁ = 20 mm. Calculate a) the tangential and radial components of the tooth force, and b) the reaction forces at A and B. Assume the pressure angle is 20° for the mating spur gears. RB RB Input shaft B 40 mm 25 mm RA RAY 7. = 60 N.m 1. a) F=3000N, N=1092N, b) Raz = 420N, RAZ=672N, RBY 1154N, RAY = 1846N 2.