Repeat Prob. $2$ with the chain parallel to the z axis with P in the positive z direction. $($P is applied at B$)$

Use FBD shown below for calculation

Problem $2$

A torque $T=100N-m$ is applied to the shaft EFG, which is

running at constant speed and contains gear F$.$ Gear F transmits

torque to shaft ABCD through gear C $,$ which drives the chain

sprocket at B $,$ transmitting a force P as shown. Sprocket B $,$ gear

$C,$ and gear $F$ have pitch diameters of $a=150,b=250,$ and $c=$

$125$ mm $,$ respectively. The contact force between the gears is

transmitted through the pressure angle $=20.$

Assuming no frictional losses and considering the bearings at A $,$

D$,$ E$,$ and G to be simple supports, find the maximum tensile

bending and maximum torsional shear stresses at B in the shaft.

Combine these stresses and determine the principal normal and

shear stresses at B in the shaft.

Use FBD shown right for calculation.