Work & Machines
Terms in this set (11)
The transfer of energy to an object by using a force that causes the object to move a distance in the direction of the force.
Unit used to express work and energy
A device used to make work easier by changing the size or direction of force
Work done on a machine (human effort applied)
Work done by a machine
A number that tells how many times a machine multiplies force; represents the degree to which work is made easier
A measure of the work output to work input which tells a machine's ability to overcome friction; Expressed as a percentage (Work output /Work input x 100)
The rate (speed) at which work is done and energy is transferred; It measures how fast work happens or energy is transferred
Unit used to express power which is the same as Joules/second
The force one applies to the machine through a distance.
The force the machine applies through a distance
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