P$2\mathrm{.}2$ In order to drill a wall with the help of a bit, a vertical force of $90$ N is applied to the arm B and a horizontal force of $60$ N on handle C$,$ as shown. What is the vertical force that must be applied to the handle so as not to bend the bit at A$?$ What is the reduction of this new system to point A$?$

$2\mathrm{.}250N$;$20(3n_1-2n_3)N,13\mathrm{.}5n_{1}Nm.$