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Required information

Determine the maximum shearing stress in a solid shaft of $1\mathrm{.}8-$in$.$ diameter as it transmits $90hp$ at a speed of $($a$)750rpm.$

$($b$)16Hz$

$($i$)$ When rotating at $750rpm,$ the angular velocity of the shaft is given as

$($ii$)$ When rotating at $16hz,$ the angular velocity of the shaft is given as

$($rad$/$s$)$

$($rad$/$s$)$