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PAPER 2
FORCES
Resultant force + Work
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Izzy
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Cards (7)
what is resultant force
a single force (the
sum
of all other forces acting on an object)
what is the equation for work done
work done =
force
x distance
what is the units for the work done equation
Work done
= W, in
Joules
J,
Force
= F, in Newtons N
Distance
= s, in
metres
, m
what is work done
energy
being transferred from the object doing the work to another form
if a book is lifted 1m in the air, and 2m to the right...
work is done (against
gravity
) when moving 1m vertically, as its going against the direction of gravity
work done compared to displacement
one
joule
of work is done when a force of one
newton
causes a displacement of one
metres
1 joule = 1
newton-metre
what happens when work is done against frictional forces
a rise in
temperature
of the object