Date post: | 14-Jan-2015 |
Category: |
Education |
Upload: | shannoncmorris |
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ForceA push or pull that can change the way
something moves
Simple Machine
A tool that uses force to make work easier.
Inclined planeA simple machine with a flat surface whose endpoints are at different
heights.
effortThe total Work
done to achieve an outcome
LeverA stiff bar that moves freely around a
fixed point.
fulcrumThe pivot point
Class one lever
when the fulcrum is flanked by the effort and the load
Class Two lever
the load in the middle of the fulcrum and the effort
Class three lever
the effort lies between the load and fulcrum
wedgetwo inclined planes in a v-
shape
Outward force
Push outward
Downward force
Push down
screw
An inclined plane wrapped around a column
shaft
The long part of the screw
head
The top of the screw
pulley
A rope fitted around the rim of a fixed wheel.
Fixed pulley
The wheel does not move, making the effort force change direction
Moveable pulley
This type of pulley increases the force’s size. By pulling a rope, both the load and the pulley
raise
Wheel and axle
Two cylinders that turn on the same axis
friction
A force that slows or stops motion between two surfaces that are
touching
Compound machine
A machine made up of two or more
simple machines