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Unit 2 Energy


work transfer of energy to an object by using a force
energy ability to cause change
power rate at which work is done
kinetic energy energy of an object due to its movement
potential energy the energy that an object has because of the position, condition, or chemical composition of an object
mechanical energy sum of an objects kinetic energy and potential energy due to gravity or elastic deformation..
machine devise that helps do work by changing the magnitude and/or direction of an applied force
mechanical advantage a number that tells you how many times a machine multiplies input force
mechanical efficency a quantity, usually expressed as a percentage that measures a ratio output to work input in a machine
lever simple machine that consists of a bar that pivots at a fixed point
fulcrum the point of which a lever pivots
wheel and axel a simple machine consisting of 2 circular objects of different sizes; 2 wheels connected by an axle in the middle
pulley a wheel over which a rope chain or wire passes
inclined plain a simple machine that is straight, slanted surface, which facilitates the raising of loads; a ramp
Created by: m.carroll24