Q3. If the bucket and its contents have a total weight of 20 lb, determine the force in the supporting cables DA, DB, and DC. A 4.5 ft B 3 ft 2 15 ft W=2016 2.5 ft C D 3 ft 1.5 ft y

1] The members of a truss are connected to the gusset plate. If the forces are concurrent at point O, determine the magnitudes of F and T for equilibrium. Take 0-30°. 8KN SkN

% EV The crate has a weight of 550 lb. Determine the force in each supporting cable. 30 个

Q2 Find the force acting in each of the members of the truss shown below. Remember to specify if each member is in tension or compression. 6 ft 6 ft 500 lbs 6 ft 6 ft

6 The 141 lb uniform tank is suspended by means of a 6.3-ft-long cable, which is attached to the sides of the tank and passes over the small pulley located at O. If the cable can be attached at either points A and B or C and D, determine which attachment produces the least amount of tension in the cable. What is this tension? 211. D 2 ft

Determine the force in each cable needed to support the 500-lb load. 3.R 6 ft 6ft 3 ft 5 A 6 ft 2 ft

The boom supports the two vertical loads. Neglect the size of the collars at D and B and the thickness of the boom, and compute the horizontal and vertical components of force at the pin A and the force in cable CB. Set F1 = 810 N and F2 = 320 N .  Pt A. : Determine the horizontal and vertical components of force at the pin A Pt B:  Determine the force in cable CB.

Plot the magnitude of the resultant R of the three forces as a function of 0 for 0 ≤ 0≤ 360°. After you have the plot, determine the value of 0 which makes the magnitude R of the resultant of the three loads (a) a maximum and (b) a minimum. Record the magnitude of the resultant in each case. Use values of = 80° w = 19°F₁-63N, F₂-116 N, F3-83 N. Answers: (a) maximum R- N when 8- i 90 (b) minimum R- N when 8- i 0 181.47 150.04

5. The cable supports the three loads shown. Determine the magnitude of Pi if P2 = 600 N and yB = 3 m. Also find sag yD E 1 m A YD Ув 4 m B D P2 P2 P1 6 m 6 m 3 m -3 m

Determine the magnitude of the force in member DC if P2 = 100 lb. 2 m A G A B P₁ 2 m E D P2