WME01Topic 1.12 questions
Modelling assumptions such as particles, light inextensible strings and smooth surfaces.
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Original practice questions written in the style of the exam.
A crate is dragged across a horizontal floor by a rope. In a model of the motion, the crate is modelled as a particle and the rope is modelled as light.
(a) Explain what is meant by modelling the crate as a particle, and state one consequence of this for the model.
(b) Explain what is meant by modelling the rope as light.