Determine the force in each member of the loaded truss. The forces are positive if in tension, negative if in compression. Part 1 B 3.1 m AD 50- AD= Correct Answers: CD= 50 The Free-Body diagram for joint Dis drawn assuming that all internal forces are in tension. Solve for the forces in AD and CD. The forces are positive if in tension, negative if in compression. 6.2 m 50 D 4699.4662 3600 N -3020.7586 50° N 3600 N N

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Free Body Diagram

The system of forces acting on a body tends to either rotate it or make the body undergo motion. In general, when an external agent exerts a force on a body, the body undergoes translational motion and rotational motion. The body has six degrees of freedom under the influence of that force. Here, three degrees of freedom are from the translational motion while the other three are from the rotation motion. However, sometimes the bodies are not allowed to undergo any motion and are fixed, under such conditions the body is said to be constrained.