a device that makes work easier.
a machine that does work with only one movement
force applied to a machine
force applied by the machine to overcome resistance
A machine in which work input equals work output.
number of times a machine multiplies the effort force.
a bar that is free to pivot/turn about a fixed point.
the fixed point around which a lever pivots
part of the lever on which the effort force is applied
Part of the lever that exerts the resistance force.
Ideal Mechanical Advantage (lever)
ima=length of effort arm/length of resistance arm
A grooved wheel with a rope or chain running along the groove.
a pulley attached to something that doesnt move like a wall or a ceiling.
A pulley that is able to move.
simple machine consisting of two wheels of different sizes that rotate together.
sloping surface used to raise objects.
IMA=radius of wheel/radius of axle
inclined plane IMA
IMA= length of slope/height of slope
inclined plane wrapped in a spiral around a cylindrical post.
inclined plane with one or two sloping sides.
the science of designing artificial replacements for parts of the human body
a device that combines two or more simple machines
Measure of how much work put into a machine is change to useful work put out by a machine.
WorkOut/WorkIn X 100%
FrXdr/FeXde X 100%
The rate at which work is done