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Simple Machines
Review words
Term | Definition |
---|---|
effort force | force applied to a machine |
resistance force | force that opposes the effort force |
mechanical advantage | the level of the advantage given by using the machine |
efficiency | the comparison of the work put in(input), to the work put out(output) |
work input | the work done on the machine by an outside force |
work output | the work that a machine does |
lever | bar that is free to turn about a fixed point |
fulcrum | fixed point at which a lever is supported |
pulley | a rope that is wrapped around a wheel |
inclined plane | slanted surface or ramp |
screw | an inclined plane wrapped around a cylinder |
wedge | two inclined planes back to back |
compound machine | machine that compares two or more simple machines |