T=15+2.2sin21.85cos2tKN.m. where is the crank angle displacement from the inner dead center. Assuming the resisting torque to be constant, determine: a) The horsepower of the engine when the speed is 150rpm. b) The moment of inertia of the flywheel if the speed variation is not to exceed 0.5% of the mean speed. c) The angular acceleration of the flywheel when the crank has turned through 30 degrees form the I.D.C