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Inclined Plane
An inclined plane spreads the amount of
work needed to move an object over a larger
distance so that less force is needed at any
particular moment. |
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Wedge
A wedge is two inclined planes attached to
each other. The wedge makes work easier by
splitting something when force is applied.
Often, wedges are used in conjunction with
levers. |
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Screw
A screw is an inclined plane "rolled
up." A screw concentrates the force
applied on an object to a smaller area. It
pushes a concentrated amount of force away
from the user. |
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Lever
A lever has three parts - effort (E), fulcrum
(F) and load R or resistance (R) The fulcrum is the point on which the
lever turns; this allows the weight to be
moved a short distance with a concentrated
amount of force (effort) |
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Wheel and Axle
A wheel and axle reduces the amount of
friction an object creates during its motion.
Less surface is exposed to the stationary
object. |
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Pulley
A pulley makes work easier by changing
direction of the force applied. When force is
exerted downward, the object moves up or
across. |
