A

Part A

A $17-$kg ladder has a center of mass at G $.$ If the coefficients of friction at A and B are ${}_A=0\mathrm{.}3$ and ${}_B=0\mathrm{.}2,$ respectively, determine the smallest horizontal force that the man must exert of the ladder at point $C$ in order to push the ladder forward.

$F=204N$

$F=120\mathrm{.}2N$

$F=166\mathrm{.}8N$

$F=288N$