$EI=$ constant

$E=200$GPa

$I=500({10}^6)m{m}^4$

FIG. P$7\mathrm{.}41,$ P$7\mathrm{.}42$ Use the virtual work method to determine the rotation of joint B and the vertical deflection at joint B of the frame below.

Ans for joint B must be $(0\mathrm{.}0011$ rad$)$