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EMS 6th Gr. Sc. 2

Work Power & Simple Machines

QuestionAnswer
Work Only to be done when a force mves an object
Work formula Force x distance
Work unit Newton/meter or a joule
Joule In the metric system n/m is called a joule
Power How fast something is happening
Power Unit A watt
Power formula Force x distance
Pulley A wheel that rotates around a stationary axle
Inclined Plane A slanted surface with no moving parts, example a ramp
Wedge An inclined plane that does move
Lever A rigid bar that is fixed at a fulcrum
Wheel and Axle A disk that turns around an axis and transfers force to and from and axle
Compound Machines A combination of two or more simple machines example blender, washing machine, VCR
Work Input Work that comes from the force that is applied to the machine
Screw An inclined plane
Work Output Work done by a machine
Efficiency The comparison between work input and work output
Mechanical Advantage The advantage created by a machine that enables people to work while using less force
Machine An instrument used to make work easier
Created by: ems535
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