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(II) The net force exerted on a particle acts in the positive x direction. Its magnitude increases linearly from zero at x = 0, to 380 N at x = 3.0 m. It remains constant at 380N from x = 3.0 m to x = 7.0 m, and then decreases linearly to zero at x = 12.0 m. Determine the work done to move the particle front x = 0 to x = 12.0 m graphically, by determining the area under the Fx versus x graph.
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