Pontoon Pump Forces: Understanding Inertia

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The discussion centers on the mechanics of a pontoon pump that moves in a specific direction when activated. The user questions the role of inertia, associating it primarily with angular momentum, and seeks clarification on why the pump's action causes movement. It is suggested that the pump accelerates water in one direction, resulting in the pontoon moving in the opposite direction, aligning with Newton's third law of motion. The conversation highlights the confusion between inertia and the forces at play in fluid dynamics. Understanding these principles is crucial for grasping the pump's behavior.
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Hi all.
I have a pontoon pump, that when activated takes off in a particular direction. It has been described as inertia, however my understanding of inertia is angular momentum, so not sure why this would make the pump go in a particular direction.

I originally thought it was because the pump accelerates water in one direction, therefore the pontoon goes in the opposite. Any help and reference material would be great.
 
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however my understanding of inertia is angular momentum
That does not make sense.

I originally thought it was because the pump accelerates water in one direction, therefore the pontoon goes in the opposite.
Right
 

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