4. Determine the force in members KJ, NJ, ND, and CD of the K truss. Indicate if the members are in tension or compression. 3m 3 m B C El 6 kN 75 KN 9 kN -4m- 4m 4m 4 m--4m

5 kN, 3 kN 4 m 5 kN 6 kN 4 kN K TWING B C D 2 m 2 m2 m2 m 4 kN E 2 m H F 2 KN 2 m A Determine the force in members IJ of the Howe truss, and state if the member is in tension (T) or compression (C). B Determine the force in members CD of the Howe truss, and state if the member is in tension (T) or compression (C). с Determine the force in members EJ of the Howe truss, and state if the member is in tension (T) or compression (C).

3-22. Determine the force in members BG, HG, and BC of the truss and state if the members are in tension or compression. 3 m A H oooooo B 6 kN G 0000 C 7 kN 12 m, 4 @ 3 m- Prob. 3-22 D F 4 kN 4.5 m E

4. Determine the force in members CD and CM of the Baltimore bridge truss and state if the members are in tension or compression. Also, indicate all zero-force members. M K N O P A B C D DE F H 2 kN 2 kN 5 kN 3 KN 16 m, 8 @ 2m 2 m + 2 m

3 E 8 m 3 m 6 m 3 m G. 40 kN 50 kN 8 m In the truss loaded as shown, determine the force in the member BE. C)