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40538
Forces
Description
GCSE science (forces) Mind Map on Forces, created by ishi2001 on 07/04/2013.
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forces
science
gcse
Mind Map by
ishi2001
, updated more than 1 year ago
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Created by
ishi2001
over 11 years ago
282
3
1
Resource summary
Forces
THRUST IS..
upward or forward force
used for propellers, rocket engines (etc)
it can be used for handheld objects
FRICTION IS...
Slows down a moving object
A rough surface increases friction
a smooth surface reduces friction
GRAVITATIONAL FORCE IS...
the pull of attraction between two masses
examples...
the attraction between a book and a person is small
the attraction between the earth and an object is large
what is weight?
gravitational force between an object and the earth
weight is measured in newtons
equation to work out the weight
weight= mass times 10N/kg
what is mass?
mass is the 'amount of matter' or stuff somthing contains
mass is measured in kg.
BALANCED FORCE IS..
equal in size but opposite in direction
if forces on an object are balanced then..
an object that is not moving stays still
an object that is moving continues to move at the same speed and in the same direction
Upthrust IS...
upward force experienced in a liquid
upthrust is caused by water being pushed out the way
upthrust is decided by the volume of the object and density of the liquid
MAGNETIC FORCE IS..
when magnets exert a pull or pushing force
two same sides, i.e a north side and north side will exert a pushing force
two opposite sides, i.e a north side and south side will exert a pull force
when some materials, like metal, experience a magnetic force when a magnet is near.
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