What is the ideal mechanical advantage and what are the


  1. A 1050 rev/min motor has a drive pulley 3 in. in diameter, and the driven pulley is 9 in. in diameter. What is the ideal mechanical advantage, and what are the revolutions per minute for the output pulley?
  2. What is the input work of a 22 percent efficient gasoline engine if during each cycle it performs 330 J of useful work?
  3. A 60 W motor lifts a 5 kg to a height of 3 m in 9 s. What us the output power.

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