Determine the support reactions at (1) and (3). Take (E=200 mathrm{GPa}, I=350left(10^{6} ight) mathrm{mm}^{4}, A=20left(10^{3} ight) mathrm{mm}^{2}) for each member. Supports (1) and (3) are

Determine the support reactions at (1) and (3). Take \(E=200 \mathrm{GPa}, I=350\left(10^{6}\right) \mathrm{mm}^{4}, A=20\left(10^{3}\right) \mathrm{mm}^{2}\) for each member. Supports (1) and (3) are pinned and joint (2) is fixed.

12 kN/m 2 20 kN 2 3 m 2m -- 2 m 9 4 8 4 m