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A constant force of 2.50 N accelerates a stationary particle if mass 15g through a displacement of 2.50 m . find the work done and the average power delivered.
Work done = Force x displacement. = 2.50 x 2.50 = 6.25 Joule.Avg. Power = Force x velocity...................(1)From the work energy theorem,2.50 x 2.50 = 0.5 * 15/1000 * v^212.5 * 1000/15 = v^2v = root(12500/15) = > 28.86 m/s.put v in eq. (1) we get,Avg. Power = 2.50 x 28.86 => 721.15 Watt.
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