(b) During steady-state operation, a gearbox receives 60 kW through the input shaft and delivers power through the output shaft. For the gearbox as the system, the magnitude of the rate of heat...

Extracted text: (b) During steady-state operation, a gearbox receives 60 kW through the input shaft and delivers power through the output shaft. For the gearbox as the system, the magnitude of the rate of heat transfer from the system is lėj = hA(T, – T;) where h =170 W/m°K is the heat transfer coefficient, A = 1.0 m² is the outer surface area of the gearbox,T, = 308 K is the temperature at the outer surface, and T; = 300 K is the temperature of thesurrounding air. For the gearbox, evaluate the heat transfer rate and the power delivered through the output shaft, each in kW. If the output shaft rotates at 400 rpm, find the torque delivered by the output shaft. 4