Dynamics S1 slide 10: Do particles and rigid bodies really exist? (ENGR5004) - Revisica

Dynamics S1 slide 10: Do particles and rigid bodies really exist?From lectureCurrent specThird3 marks3 min

ENGR5004 Dynamics Session 1, slide 10 (Particles and rigid bodies)

The slide shows an aeroplane observed from a fixed reference point and two ways of modelling it:

Rigid body simplification: no change in shape of the body, just displacement.
Particle simplification: model the kinematics of the centre of mass.

Do particles and rigid bodies really exist? Explain why we use them, and say when each model is appropriate for the aeroplane.

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