For the member that is shown below: 1. Determine the moment of the force 50N around point O. 2. Determine the moment of the force 90N around point O. 3. Draw the free body diagram of the shown member. 4. Find the fixed support reactions at point O, knowing that the rigid body is under equilibrium. (neglect the member's weight). 50N 2 m 60N.m. -3m -3m- 90N

2. Determine the horizontal and vertical components of reaction which the pins exert on member AB of the frame. In other words, find the reactions at pins A and B. 300 lb 60° B 4 ft E -3 ft -3 ft 500 lb

The bent bar as shown below is supported by a cable AE, a ball-and-socke joint at O, and a journal (slider) bearing at D. At the journal bearing D, the mome support reactions and the force support reaction along y-axis are zero. The 2-kip force and the 6 kip-ft couple-moment are parallel to z-axis and applied at point B Determine the tension in the cable AE and the support reactions at O and D. A 4 ft X MEST Z 6 kip-ft 2 ft B 2ft 2 kips 3 ft [ 1 kip = Lo = 1000 lb. 1 E 14 ft y

Identify all the zero-force members in the trussesbelow.