$(4$ Pts$.)$ Rework Example $13\mathrm{.}8($shear$)$ and $13\mathrm{.}14($moment$)$ in the textbook $($do shear and moment diagram$),$ however, change force $P_1$ to $14$ kips and force $P_2$ to $12$ kips. This also changes $R_A$ to $40$ kips and $R_B$ to $26$ kips.

$R_A=$

$2$kips