Modelling Assumptions (Edexcel A-Level Mathematics): Flashcards

Object treated as point mass; size & shape ignored

Shape & size remain constant; no deformation

Surface provides no friction

Friction calculated using coefficient of friction

Object has negligible mass compared to others

Tension is same throughout

String does not stretch under tension

Acceleration is same for all connected objects

No friction; rotates without resistance

Tension is same on both sides of pulley

Uniform density; mass evenly distributed

At geometric centre of object

$9.8 \, \text{m/s}^2$