(2) Starting from a support joint, use method of joints to determine the forces in members BC, CH, and GH of the loaded truss. Ans: BC= 75 kN C, CH=48.0 KN C, GH = 112.5 kN T B 4 m D E 5 m 5 m 5 m 5 m A H G F 30 kN 60 kN 30 kN

A rod AB, hinged at A and at- tached at B to cable BD, supports the loads shown. Knowing that d = 200 mm, determine (a) the tension in cable BD, (b) the re- action at A. A 90 N D 90 N -100 mm-100 mm-1 mm-100 mm 100 mm

(6) The 180 lb uniform rectangular plate is suspended by three vertical cables as shown so that the plate remains in the horizontal position. Compute the tension in each cable. Ans: T₁ =70 lb, TB = 20 lb, Tc = 90 lb 15 in. 45 in. B 15 in. 50 in. 45 in.

A force of 7 pounds compresses a 15-inch spring a total of 3 inches. How much work is done in compressing the spring 9 inches? Use Hooke's Law to determine the variable force. Work done: ft-lb

(1) Starting from a support joint and use method of joints to determine the force in each member of the loaded truss. All triangles are equilateral. Ans: AB = 15.59 kN C, AE = 8.66 kN T, BC= 15.01 kN C, BD = 5.20 kN C, BE 4.04 kN C, CD = 7.51 kN T, DE = 6.35 kN T A E 8 kN D 4 kN 2 kN

A weight of mass 100 kg hangs from two wires that make angles of 54° and 48°, respectively, below the horizontal, as shown in the diagram. 100kg T2 T₂ = T2 Find the tensions (forces) in both wires: T₁ Round your answer to 2 decimal places. i+ Round your answer to 2 decimal places. j. Round your answer to 2 decimal places. i+ Round your answer to 2 decimal places. j.

(2) For a pair of 20 lb gripping forces, determine the clamping normal force N at each jaw and the pin force at O. Ans: N 80 lb, O= 88.9 lb 16"- 70° 20 lb 20 lb

A container is supported by three cables that are attached to a ceiling as shown. Determine the weight W of the container, knowing that the tension in cable AB is 6 kN. 450 mm 500 mm B 19 D 360 mm 320 mm 600 mm

Two particles have a mass of 7 kg and 15 kg, respectively. Part A If they are 800 mm apart, determine the force of gravity acting between them. Express your answer to three significant figures and include the appropriate units.

How would you solve this Using Unit Ratios (Not combined Conversion Factors) and Use Dimensional Analysis (Show Cancellation of Units)