In a turning moment diagram the areas above and below the mean torque line taken in order are 4400, 115o, 1300,and 4550mm^2 respectively. The scales of the turning moment diagram are : Turning moment 1mm=100Nm; Crank angle 1mm=1° Find the mass of the flywheel required to keep between 297 and 303rpm, if the radius of gyrations is o.525m.​