$4-85.$

The gear reducer is subjected to the couple moments

shown. Determine the resultant couple moment and specify

its magnitude and coordinate direction angles.

Recall: Moments are just vectors. You can find

their components and add them together just

like you would do with forces.

Ans: ${\displaystyle \underset{?}{\overset{?}{}}}$vec$(M)=($:$52\mathrm{.}0,50,30$:$)Nm,{}_x=48\mathrm{.}3,$

${}_y=50\mathrm{.}2,{}_z=67\mathrm{.}4$