Question S Or 10 Most gasoline engines in today's automobiles are belt driven. This means that the crankshaft, a rod which rotates and drives the pistons, is timed to the camshaft, the mechanism which actuates the valves, by means of a belt. Starting from rest, assume it takes / = 0.0320 s for a crankshaft with a radius of r, = 3.75 cm to reach 1350 rpm. If the belt does not stretch or slip, calculate Macmillan Lea ring the angular acceleration az of the larger car, shaft, which has a radius of ry = 7.50 em, during this time period