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physics paper 2 - Coggle Diagram
physics paper 2
forces
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weight, mass and gravity
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weight is the force acting on an object due to gravity, this changes depending on the strength of the gravitational field
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calculating forces
use scale drawings to find resultant forces 
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forces and elasticity
sretching, compressing or bending transfers energy
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investigating springs
you can investigate the link between force and extension
plot your results on a force extension graph
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moments
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levers make it easier for us to do work, levers increase the distance from the pivot meaning less force is needed to get the same moment, making it easier to do work
gears transmit rotational effects - gears are circular discs with teeth around their edges, there teeth interlock so that turning one causes another one to turn in the opposite direction, they are used to transmit the rotational effect of a force from one place to another. different sized gears can be used to change the moment of a force. a force transmitted to a larger gear will cause a bigger moment, as the distance to the pivot is greater. the larger gear will turn slower than the smaller gear.
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