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Mini-Quiz: Overview of Machines

by Ron Kurtus (revised 12 July 2013)

Take this Mini-Quiz to check your understanding of the lesson material.

1. Is a bicycle a machine?

No, because it does not have an engine

Bicycles have never been studied to determine the answer

Yes, because the output speed can be greater than the input

2. If a person uses his 150 pounds of weight to jack up a 3000 pound car, what is the mechanical advantage of the jack?




3. Can a machine be 100% efficient?

Yes, if it is powered by nuclear energy

It depends on the size of the machine

No, because of losses due to friction, heat and other factors

If you got all three correct, you are on your way to becoming a Champion in Understanding Machines. If you had problems, you had better look over the material again.

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Resources and references

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Top-rated books on Simple Machines

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Mini-Quiz: Overview of Machines

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