Solve Problems P$7\mathrm{.}7$ to P$7\mathrm{.}12$ by the moment$-$area method. Unless noted otherwise, $EI$ is a constant for all members. Answers may be expressed in terms of $EI$ unless otherwise noted.

P$7\mathrm{.}7.$ Compute the slope and deflection at points $B$ and $C$ in Figure P$7\mathrm{.}7.$

Use moment area method only

${}_B={}_C=-\frac{960}{E}$I,$v_B=\frac{3840}{E}$Iuarr,$v_C=\frac{7680}{E}$Iuarr