The shaft rotating at 750 rpm carries a spur gear B with 79 teeth and a module of 5 mm. The teeth are 20, full-depth, involute form. The gear receives 25 kW from a pinion directly above it as shown. The shaft transmits the power to a **V-belt** sheave of diameter Ds=300 mm. The belts are oriented downwards at an angle of 40 $^o$ with the horizontal. Calculate the bending moment at B in N-m. The dimensions are a=250, b=250, and c=150 in mm. B B b C D x dia=D spur gear 20FD Qdrives B V-belt dia-D sheave B F2 40