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Key words: Simple machines, Class 1, Class 3, lever, speed mechanical advantage, fulcrum, force, effort, load, weight, physical science, Ron Kurtus, School for Champions. Copyright © Restrictions

Mini-Quiz: Increasing Speed with a Lever

by Ron Kurtus (20 November 2014)

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

1. What type of levers can increase the speed of the load?

Class 1 and Class 2

Class 2 and Class 3

Class 1 and Class 3

2. How does the load arm length compare with the effort arm length for increasing load speed?

Load arm length is longer than effort arm length

Load arm length is shorter than effort arm length

Load arm length always equals effort arm length

3. What is the load speed if the effort speed is 20 m/s, the load arm length is 2 m, and the effort arm length is 1 m?

4 m/s

20 m/s

40 m/s

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.

Be well organized

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Mini-Quiz: Increasing Speed with a Lever

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