Quantities, Units & Modelling (AQA A-Level Mathematics): Flashcards

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Modelling Assumptions
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Particle assumption

Point mass; size and shape ignored

Rigid body assumption

No deformation; shape/size remain constant

Smooth surface

Provides no friction

Rough surface

Provides friction

Light object

Negligible mass; weight ignored

Inextensible string

Doesn't stretch under tension

Inextensible string: acceleration property

Same for all connected objects

Smooth pulley: tension property

Same on both sides of pulley

Uniform body: centre of mass location

At geometric centre

Standard value of gg

9.8 m/s29.8 \, \text{m/s}^2

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Working with Vectors

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Working with Vectors

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