Calculate the percent difference in resultant force if the pressure angle were 25 instead of 20.

1. A straight-toothed full-depth involute spur pinion with a pitch diameter of 100 mm is mounted on an input shaft driven by an electric motor at 1725 rpm. The motor supplies a steady torque of 225 N-m.

a. If the involute gear teeth have a pressure angle of 20, determine the transmitted force, the radial separating force, and the normal resultant force on the pinion teeth at the pitch point.

b. Calculate the power being supplied by the electric motor.

c. Calculate the percent difference in resultant force if the pressure angle were 25 instead of 20.

d. Calculate the percent difference in resultant force if the pressure angle were 14 instead of 20.

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