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March 13, 2026, 06:02:02 am
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Author Topic: isolated system?  (Read 598 times)  Share 

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tolga

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isolated system?
« on: December 25, 2009, 11:07:45 pm »
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Q)As a high-board diver falls towards a diving pool, her momentum increases. Does this mean that momentum is not conserved?Explain
Can somebody please tell me what an isolated system is and how momentum can be increased and still conserved.
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kamil9876

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Re: isolated system?
« Reply #1 on: December 25, 2009, 11:15:42 pm »
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Gravity is acting on her, hence by herself she is not an isolated system. However if you include the earth as well then it is an isolated system. Her gravity pulls the earth towards her with the SAME force, hence total momentum is conserved here.
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Voltaire: "There is an astonishing imagination even in the science of mathematics ... We repeat, there is far more imagination in the head of Archimedes than in that of Homer."
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