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ch.4 science vocab

QuestionAnswer
actual mechanical advantage The mechanical advantage that a machine provides in a real situation
compound machine s device that combines 2 or more simple machines
efficiency the perecentage of the input work that is converted to output work
fulcrum the fived point aroung a lever pivits
gears two or more wheels linked to gether by interlocking teeth
ideal mechanical advantage the machanical advantage that a machine would have with out friction
inclined plane a flat surface with one end higher than the other
input force the force exerted on a machine
joule aunit of work equal to one newton per meter
lever a rigid object that pivits around a fixed point
machine a divice that changes the amount of force exerted or the direction in which a force is exerted
mechanical advantage the number of times the force exerted on a machine is multiplied by the machine
output force the force exerted on an object by a machine
pulley a grooved wheel around which is rapped a rope, chain, or cable
screw an inclined plane wrappedaround a central cylindar to form a spiral
wedge an inclined plane that moves
wheel and axel 2 circular or cylindrical objects that are fastened together and rotate about a common axis
work force exerted on an object that causes it to move
Created by: amytozib
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