A press has to punch 30 holes per min, and the motor delivers 1.5 kW to the press uniformly. If the actual punching of each hole is accomplished during 30° of crank rotation of the punching machine and fluctuation of speed is not to exceed ±10%, determine the moment of inertia of the flywheel in kg.m2 which is directly mounted on the crankshaft [answer up to 2 decimals]