The figure below shows forces acting at various points on a metal rod. The angles $=48,=33,=21.$ The length $=3\mathrm{.}8$ m$.$ Find the net torque $($in N $$ m$)$ on the rod about the following axes. A horizontal rod of length $$ lies along a horizontal dashed line. A vertical dashed line extends upwards from the center point C of the rod. A point O is labeled at the left end of the rod. Three outward pointing force vectors act on different parts of the rod. A $30$ N force extends down and left from the left end of the rod. The force makes an acute angle $$ with the horizontal dashed line. A $25$ N force extends up and right from the center point C of the rod. The force makes an acute angle $$ with the vertical dashed line. A $10$ N force extends down and right from the left end of the rod. The force makes an acute angle $$ with the horizontal dashed line. $($a$)$ an axis through O perpendicular to the page magnitude N $$ m direction $---$Select$---($b$)$ an axis through C perpendicular to the page magnitude N $$ m direction $---$Select$---$