An engine with an inertia of 20 kg m? is connected to a gearbox which drives a load with inertia of 860 kg m?. The gearbox has a step-down ratio of 7.5.
Calculate the torque from the engine to achieve an angular acceleration of the engine of 30 rad/s? b)
If the drive shaft has an inertia of 30 kg m? with a frictional torque of 200 N m, calculate the torque needed from the engine to achieve an angular acceleration of the engine of 30 m/s?
Assuming a constant angular acceleration of the system, determine the total Kinetic energy of the engine and load three seconds after starting from rest. d)
Determine the instantaneous power expended by the engine and the frictional power dissipated at three seconds after starting from rest.