simple machines. work using force to move an object
Post on 01-Jan-2016
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SIMPLE
MACHIN
E
S
WORKUsing force to move an
object
FORCE
Push or pull
FORCESGRAVITY
Force that pulls two
objects together
Gravity pulls us
toward the ground
FRICTION
Force that
holds back the
movement
of an object
WHEEL A
ND
AXLE
connec
ted so
they
turn
toget
her
GEARS
Toothed wheels
LEVERA B A R T H AT P I V O T S O N A F I X E D P O I N T
FULCRUM
the point that a lever pivots on
INCLIN
ED
PLANE
flat,
slop
ing s
urfac
e
WEDGE2 inclined planes placed back to back. Used to force two things apart or split one thing into two.
PULLEY
M A K E S W O R K E A S I E R BY C H A N G I N G T H E D I R E C T I O N O F F O R C E
A W H E E L W I T H A R O P E , C O R D , O R C H A I N A R O U N D I T
SIM
PLE
MA
CH
INES• few or no moving
parts
• used by applying force
• make work easier by changing the amount of force needed to do the work
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