In Figure Q3, the plane truss ABCDEHGFA forms part of the supports of a crane on an offshore oil platform. The crane exerts two forces, each of magnitude 122.5-kN, and acting vertically downwards on truss joints B and D. Determine the magnitudes of the axial forces in members AB, BC, EH and GH of the truss, and state whether they are in equilibrium or not

A rear suspension system for a front wheel-drive vehicle is shown here. Spring EF is offset behind member CD. The normal force due to contact between 2 wheel and the road is 4200 N. Assume the weight of the wheel and suspension system components is negligible. (a) Determine the magnitude of the force in member CD. Is the member in tension or compression? (b) Determine the support reactions at A. (c) Determine the unstretched length of the spring EF given a spring constant of 150 kN/m. 60 mm 1130 mm 60 mm 245 mm D 220 mm F 260 mm E B 165 mm 90 mm F = 4200 N

3. A 550 kg drawbridge has a hinge at one end and a cable attached to the other. It is stuck in a position where it makes an angle of 30° with the vertical. The cable pulling on the far end of the bridge is horizontal. Find the tension in the cable as well as the vertical and horizontal components of force from the hinge.

Need help please, show all work. Thanks

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.

If the value of P in the above figure is 180-lb,determine the angle θ at which it must beinclined with the smooth plane to hold 300-lbbox in equilibrium.