Two solid $1\mathrm{.}625-$in$.-$diameter steel shafts are connected by the gears shown in the figure. The shaft lengths are $L_1=9ft$ and $L_2=16ft.$ Assume that the shear modulus of both shafts is $G=12,800$ksi and that the bearings shown allow free rotation of the shafts. Assume $N_B=69$ teeth and $N_C=35$ teeth. If the gear at $D$ is rotated through an angle of $4,$ what is the maximum shear stress in each shaft?

Answers:

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