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The flywheel of an automobile engine, which is rigidly attached to Problems the crankshaft, is equivalent to a 400-mm-diameter, 15-mm-thick steel plate. Determine the magnitude of the couple exerted by the flywheel on the horizontal crankshaft as the automobile travels around an unbanked curve of 200-m radius at a speed of 90 km/h, with the flywheel rotating at 2700 rpm. Assume the automobile to have

(a) a rear-wheel drive with the engine mounted longitudinally,

(b) a front-wheel drive with the engine mounted transversely. (Density of steel = 7860 kg/m3

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