*3–60. The 800-lb cylinder is supported by three chains as shown. Determine the force in each chain for equilibrium. Take d=1 ft. В D 135° 1 ft- 90°135° d A Prob. 3–60

Draw the free-body diagram The plate is made of steel which has a density of 7850 kg / m3 If the thickness of the plate is 1 cm, determine the horizontal and vertical components of the reaction at the pin A and the tension in cable BC. B cd = 2x 2 m 4 m

3-59. Determine the force in cables AB, AC, CD, CE, an CF needed to support the 500-lb crate. Hint: First analyz the equilibrium of point A, then using the result for AC analyze the equilibrium of point C. 24 ft 24 ft D-10 ft- 7 ft E 7 ft 35° x 120⁰

Determine the resultant support reaction at C.

If the weight of the boom is negligible compared with the applied 49-kN load, determine the cable tensions T1 and T2 and the force acting at the ball joint at A. IC 3 m 5 m T1 AL 5 m 2 m B T2 D 49 kN Answers: kN T1= i kN T2 = i kN A = i

The ring weighs 6 lbf and is in equilibrium. The force F1 = 4.5 lbf. Determine the force F2 and the angle α.

3-18. If the spring DB has an unstretched length of 2 m, determine the stiffness of the spring to hold the 40-kg crate in the position shown. 3-19. Determine the unstretched length of DB to hold the 40-kg crate in the position shown. Take k = 180 N/m. %3D -2 m- 3 m В 2 m www A

Determine the tension in each cable necessary for equilibrium of the massless pipe supporting 800 N/m uniform load over a distance of 3 m if the support at A is ball- and-socket. Note that the structure is symmetrical about the x-z plane. X 1.5 m 800 N/m 3 m B 1 m 1.5 m -1.5m1m Z 1.5 m 3 m

The ring at B is supported in equilibrium by spring AB, a cable running through the frictionless pulley at C, and cable BD. The pulley radius is 0.0150 m, and the unstretched length of spring AB is 0.21 m. If F₁ = 390 N and F₂ = 170 N at 0=38 degrees, determine the spring constant & and the force exerted on the ring by cable BD expressed in Cartesian components. F₁ a b k C d values for dimensions on the figure are given in the following table. Note the figure may not be to scale. Variable value 0.300 m 0.0900 m 0.150 m 0.0600 m FBD= C Note the figure may not be to scale. D Submit Question N/m B i+ A www. F2 3) N

3–43. The three cables are used to support the 40-kg flowerpot. Determine the force developed in each cable for equilibrium. D 1.5 m y 1.5 m A 2 m В