A machine with a velocity ratio requires 1000J of work to raise a load of 500N through a vertical distance of 1.7m . find the efficiency and mechanical advantage of the machine.

Answer 1

work output = 500 * 1.7 = 850 Joules

work input = 1000 Joules

efficiency = (850/1000)100 = 85 %

since you did not say what the velocity ratio was, how would I know what the mechanical advantage was? They are the same on inverses depending of which way you write the velocity ratio.

Answer 2

The efficiency of of the machines

Answer 3

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