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Using the method of joints, determine the force in each member of the truss shown. State...

Using the method of joints, determine the force in each member of the truss shown. State whether each member is in tension or compression.

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Answer #1

Ok perfect, please repost. I will take this post to explain briefly the method of joints so you have a guide to solve the problems:

The free-body diagram of any joint is a concurrent force system in which the summation of moment will be of no help.Employ this equations:

This means that to solve for the forces acting on a joint, select a joint with no more than two unknown forces . This means selecting a joint acted on by only two members. We can assume any unknown member to be either tension or compression. If negative value is obtained, this means that the force is opposite in action to that of the assumed direction. Once the forces in one joint are determined, their effects on adjacent joints are known. We then continue solving on successive joints until all members are found.

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