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The rigid body idealisation works because deformations are often:
APeriodic
BNegligible
CEnormous
DReversed
Answer & Solution
Correct 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: NCERT Class 11 Physics Part I, Chapter 7, Systems of Particles and Rotational Motion._
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