$100$ Points

$3\mathrm{.}7-9$

Name:

A motor delivers the given horsepower at the end of a shaft. The gears at B and C take out the horsepower shown in the figure. Determine the required diameter of the shaft for the given strength and serviceability requirements.

$\backslash$table$[[$Allowable shear stress $($psi$)],[6000]]$

$\backslash$table$[[\backslash$table$[[$Allowable angle of twist $($deg$)],[$from A to C$]]],[2\mathrm{.}5]]$

$\backslash$table$[[$Applied HorsePower $($hp$)],[625]]$

$\backslash$table$[[$HorsePower in section BC$],[250]]$

$\backslash$table$[[$rpm$],[1200]]$

$\backslash$table$[[$Length $($in$)$ of AB$],[70]]$

$\backslash$table$[[$Length $($in$)$ of BC$],[40]]$

$\backslash$table$[[$G $($psi$)],[11500000]]$

Motor

$625$ Hp