2-7. Determine the magnitude of the resultant force F2 = F + F2 and its direction measured counterclockwise from the positive u axis. %3D *2-8. Resolve the force F, into components acting along the u and v axes and determine the components. 29. Resolve the force F, into components acting along the u and v axes and determine the components.

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Q: 160 mm 480 N 60 mm 80 mm CD = Cx = -795N, left E 150 mm 60 mm 100 mm B.

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A: L1= 125 mm = 0.125 mL2= 375 mm = 0.375 mL3= 225 mm = 0.225 mL4= 325 mm = 0.325 m Position vector…

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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.