Topic: Equations of Equilibrium Subject: Civil Engineering  Find the reactions of the members. Both B and C are internal hinges.

Q: Determine the force in each member of the truss. State whether the members are in tension or…

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Q: The pin-connected structure consists of a rigid beam ABCD and two supporting bars. Bar (1) is an…

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Q: The roof truss below is supported by a roller at A and a hinge at B. Find the reactions of the…

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Q: Problem 1: Determine the force in members DE,EI, JI, FI, and FE of the truss. 4 6 6→4 +4+6- 6 4 |100…

A: There are two methods to solve any unknown forces and member forces acting on the truss. They are a…

Q: 3. For the truss shown in figure below: > Determine the force in members BC, HC, and HG. After the…

A: Reactions

Q: The pin-connected structure consists of a rigid beam ABCD and two supporting bars. Bar (1) is an…

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Q: Determine the force in the elements AB, AE, BC, BF, BD and BE of the space truss, and state whether…

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Q: a the bridge truss shown, the end chord AB is composed wo C 230 x 30 channels latticed together so…

A: C 230 x 230:Sx=25.5 x106 mm4A=380 mm2E=2.1 x 105 MPaFy= 290MPa

System of Forces

A force is an external influence or agent that changes the state of a system. According to Newton's second law, the force applied to a body is proportional to the change in momentum of a body. Hence, whenever a force is applied to a body, its momentum changes. If the body is at rest, under the action of force, its state of rest changes to motion. In other words, the magnitude of the momentum of the body changes from zero to a measurable value. Similarly, if the body possesses some initial velocity, it has some associated momentum, the effect of force can cause the body to halt or come to rest, that is, the momentum reduces to zero.