Use the following information to work the problem: 1. The members of the truss (shown in black) are connected at the joints (shown in red) by smooth pins. 2. There is a rocker support at A, and a pin support at G. 3. The orange dashed lines are used to show distances. 4. The external applied forces are shown in blue. J A B 6 ft 45 lb 6 ft Method of Sections C 50 lb 6 ft H 30 lb G 6 ft F – E 6 ft 25 lb 6 ft 25 lb

Part C only

Q.2) Determine the moment about line OB due to the force F shown in figure below. The magnitude of force F is 800 N. y 500 mm 600 mm Y N A B | 225 mm 1 F 525 mm O 400 mm X

22:03 X Two forces are applied to a hook. Variable F₁ F₂ a b B с d wamap.org Value 50 lb 30 lb 2,5 ft 3.5 ft 5.5 ft 2.5 ft 13/12 resultant force FR i. α ii. B iii. Y a b Values for the figure are given in the following table. Note the figure may not be to scale. F₂ F₁ A y a. Write each force (F₁,F₂) as cartesian vectors. b. Find the resultant force FR, express as a cartesian vector c. Find the magnitude of the resultant force FR d. Determine the coordinate direction angles of the