Two solid steel shafts are connected by gears $B$ and $C.$ Knowing that for each shaft $G=70$GPa and that the allowable shearing stress is $40$MPa. Determine

$($a$)$ the largest torque $T_0$ that may be applied to the end of shaft $CD,$

$($b$)$ the corresponding angle through which end D of shaft CD rotatesQuestion $4-25$ Point

Two solid steel shafts are

connected by gears $B$ and $C.$

Knowing that for each shaft $G=$

$70$GPa and that the allowable

shearing stress is $40$MPa.

Determine

$($a$)$ the largest torque $T_0$ that may

be applied to the end of shaft

CD$,$

$($b$)$ the corresponding angle

through which end D of shaft

CD rotates