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Grade: 12th pass 
        Why momentum is conserved in presence of external forces such as gravity.
3 years ago

Answers : (1)

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Vikas TU
9764 Points 
							
While conserving momentum, the gravity force acts as internal force not external.
Momentum is consrrved for the system not on any particular object.
Hence force b/w the objects in the system whether it is friction force or gravity force,
eventually it becomes internal.
3 years ago
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