For the following beam, find the support reactions at the pin at B and the roller at C. 20 kN-m, 6 kN 4 kN/m 6 m B 6 m- D 6 m E If P = 75 N and P2 = 100 N, use the method of joints to find the forces in all truss members ending at joints A and D. Hint: you do not need the support reactions to solve this problem look for joints with no more than 2 unknowns. A P 2 m B 2m