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Energy cont. : Machines, Power, Work and, Friction

QuestionAnswer
If a weight lifter is holding barbells above his head, what does he have to do to perform work? Lower Barbells
A slanted surface used to raise an object is a(n)... Inclined Plane
Power is work done over... Time
A device that does work with only one movement and changes the size or direction of a force is a(n)... Simple Machine
A bar that is free to pivot about on a fixed point is a... Lever
The rate at which work is done is called... Power
The amount by which a machine multiplies an effort force is called the... Mechanical Advantage
An inclined plane with one or two sloping sides forms a machine called a... Wedge
An inclined plane wrapped around a cylindrical post is a... Screw
A winding mountian road is an example of a(n)... Inclined Plane
Created by: Dant
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