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General Science
Ch 5 Work & Machines
Term | Definition |
---|---|
Joule | is the metric unit of work |
Work | what happens when something changes its motion in the direction of the force being applied |
Effort force | the force applied to a machine by the user. |
Fulcrum | a fixed point around which a lever rotates |
Incline plane | Simple machine made up of a ramp,used to lift an object |
Lever | Simple machine containing a bar that can turn around a fixed point |
Mechanical Advantage | the Factor by which a machine multiplies the effort force |
Pulley | Simple machine made up of a rope,chain,or belt wrapped around a wheel |
Resistance force | Force applied to a machine by the object to be moved |
Screw | Simple machine made up of an inclined plane wrapped around a straight piece of metal |
Simple machine | Tool with few parts that makes it easier or possible to do work |
Wedge | Simple machine made up of an inclined plane or pair of inclined planes that are moved |
Wheel and Axle | Simple machine made up of a wheel attached to a shaft |