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Work/Simple Machines

QuestionAnswer
actual mechanical advantage The mechanical advantage that a machine provides in a REAL SITUATION.
compound machine A device that combines TWO OR MORE SIMPLE MACHINES.
efficiency The PERCENTAGE of the input work that is converted to output work.
fulcrum THE FIXED POINT around which a lever pivots.
gears Two or more wheels linked together by INTERLOCKING TEETH.
ideal mechanical advantage The MECHANICAL ADVANTAGE that a machine would have WITHOUT FRICTION.
inclined plane A simple machine CONSISTING OF A FLAT SURFACE with one end higher than the other.
input force The force exerted ON A MACHINE.
joule UNIT OF WORK equal to one newton-meter.
lever A simple machine consisting of a rigid object that PIVOTS ABOUT A FIXED POINT.
machine A DEVICE THAT CHANGES THE AMOUNT OF FORCE exerted or the direction in which the force is exerted.
mechanical advantage The number of times the force exerted on the machine IS MULTIPLIED BY THE MACHINE.
output force The force exerted on an object BY A MACHINE.
pulley A simple machine consisting of a GROOVED WHEEL around which is wrapped a rope, chain, or cable.
screw A simple machine that consists of AN INCLINED PLANE WRAPPED AROUND a central cylinder to form a spiral.
wedge A simple machine consisting of a device that is thick at one end and TAPERS TO A THIN EDGE at the other.
wheel and axle A simple machine consisting of TWO CIRCULAR OR CYLINDRICAL OBJECTS THAT ARE FASTENED TOGETHER and rotate about a common axis.
work THE PRODUCT OF FORCE AND DISTANCE when a force is used to move an object
Created by: hcps-bhoopatsk