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BJU Physical Sci 13

BJU Physical Science Ch 13 6th edition

TermDefinition
actual mechanical advantage (AMA) The mechanical advantage that accounts for all mechanical losses sustained through using a machine.
efficiency A comparison of the amount of usable energy remaining after a process with the original amount of energy that went into the process.
fulcrum The point about which a lever pivots or rotates.
gear A simple machine that consists of a wheel with teeth on its perimeter that mesh with similar teeth of other gears to do work.
ideal mechanical advantage (IMA) The mechanical advantage for an ideal machine (100% efficient) with no friction.
lever A simple machine that consists of a rigid bar that turns about a pivot point (the fulcrum).
mechanical advantage (MA) The amount by which a simple machine multiplies an input force to produce an output force.
power The rate of doing work.
pulley A simple machine that consists of a wheel and axle system with a groove around the perimeter of the wheel in which a rope, cable, or belt moves with the wheel as it rotates.
simple machine A basic mechanical devise that changes the magnitude, direction, or distance traveled of the force used when doing work.
torque A force that tends to cause a rotation about a pivot point.
wheel and axle A simple machine consisting of a wheel with a rod running through its axis that acts as the pivot point.
work The energy transferred to a system by an external force when it acts on the system to move it.
Created by: marchscience
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