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CBSE Class 11-science Answered

can we say that if a body's centre of mass is at rest then its linear momentum is always conserved? please support the doubt with a suitable example...
Asked by yashrajgharte24.12dgatl | 04 Aug, 2021, 09:45: PM
Expert Answer
If the body's centre of mass is at rest , there is no translational motion . It may have rotational motion .
 
For example a circular disc is rotating about axis passing through its  centre of mass.
In this case centre of mass is at rest but disc is rotated .
 
Hence, if the body's centre of mass is at rest , there is no translational motion,
hence conservation of linear momentum is not applicable.
Answered by Thiyagarajan K | 04 Aug, 2021, 10:47: PM
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