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Homework Statement
Could I please have a tutor check my answer and solution?
question: An effort of 3 kN is required to move a mass of 2000 kg in a certain simple machine. If the mass is raised 1.5 meters while the effort moves 12 meters, find the efficiency?
2. equations used in solution:
work output = load x distance moved by load
work input = effort x distance moved by effort
efficiency = work output / work input
3kN = 3000 Newtons
The Attempt at a Solution
my solution:
efficiency = work output / work input
mass = 2000 kg =19613.3 Newtons x 1.5 meters /
3000 Newtons x 12 meters
effort = 29419.95 Nm / 353039.4 Nm
= 0.817
Now, is it possible to have such a low efficiency in a machine? What simple machine would this be?
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