It takes 15 s to raise a 1200-kg car and the supporting
Chapter 13, Problem 13.47(choose chapter or problem)
It takes 15 s to raise a 1200-kg car and the supporting 300-kg hydraulic car-lift platform to a height of 2.8 m. Determine (a) the average output power delivered by the hydraulic pump to lift the system, (b) the average electric power required, knowing that the overall conversion efficiency from electric to mechanical power for the system is 82 percent.
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