The rigid body idealisation works because deformations are often:

Question

Accepted Answer

B. Negligible

1. Wheels, tops and steel beams change shape very little.
2. The small change can be ignored in the analysis.
3. So the deformations are negligible in many situations.
_Source: syllabus Physics Part I, Chapter 7, Systems of Particles and Rotational Motion._

Answer

Periodic

Answer

Enormous

Answer

Reversed

The rigid body idealisation works because deformations are often:

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