Repeat Problem 13-29 for the wrist pin force.
Problem 13-29
Use program ENGINE, your own computer program, or an equation solver to calculate the maximum value and the polar plot shape of the force on the main pin of a 1 in3 single-cylinder engine with bore = 1.12838 in for the following situations.
a. Engine unbalanced.
b. Crank exactly balanced against mass at crankpin.
c. Crank optimally overbalanced against masses at crankpin and wrist pin. ·
Piston, conrod, and crank masses = 1. Place the CG of the crank at 0.5 rand the conrod at 0.33 l. Compare and explain the differences in the main pin force under these conditions with reference to the governing equations.