Jse the method of joints to find all reaction and nember forces in the trusses. (2-a) (2–b) (2-c) 6 kN 4 kN 4 kN 1.5 m 3 m 3 m 3 m 4 m 4 m 2 m 2 m

Determine the forces acting in members FE, EB and BC of the truss use the method of sections. The truss is supported by a pin at A and a roller at D. - 2 m- 1.5 m E -2 m - 2 m B 11 kN 22 kN

The truss ABCDEF is pinned at A and F. What is the force in bar BE when the external force P= 167 kN? 3m 3m K * K B 9m P D E 6m 6m

Given the Truss as shown below with load P and dimension L. Using Method of Joints, determine the following: a.) The External Reaction at Point A in terms of P. b.) The External Reaction at Point E in terms of P. c.) The Force at Member BF in terms of P. L/2 В D F H L/2 A P P E - L- L - L L -

Link-2, shown in the figure, is 30 mm wide, has 12 mm diameter bearings atthe ends, and is cut from low carbon steel bar having a minimum yield strength of190 MPa. The end-condition constants for link-2 are C = 1 and C = 1.2 for bucklingin and out of the drawing, respectively.a) Draw necessary and clear free-body diagrams to determine the reactions atthe supports and the load on both member-2 and member-3. b) Determine a suitable thickness for link-2, based on a design factor of safetyηD = 4, and considering a material having E = 207 GPa, and a minimum yieldstrength Sy = 350 MPa. c) Determine the stress and resulting factor of safety for each pin, and state yoursuggestions in case of design factors less than 4.  Use appropriate (SI) units as it applies (if any.)

Determine the force in members DE and DF of the truss shown when P= 25 kips. F D H 7.5 ft В A L C E G I K P P P 6 panels @ 6 ft = 36 ft |kips. [(Click to select) | kips. (Click to select) The force in DE is The force in DF is

2. Use the method of sections to determine the internal forces in members JI, DI, and DE. The structure is supported by a pin at A and a roller at G. L J 3 m K AN B H E F C D 2 -2 m--2 m2 m2 m2 m--2 m- 20 KN 30 kN 40 kN G

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For the truss shown,a) Use the method of joints to determine the force supported by member FG and all of the members to the right of it.

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