High School Energy & Pendulums: Is Negative Energy Real?

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The discussion centers on the concept of negative energy in relation to pendulums and gravity. Participants question whether "absorbing" negative energy can counteract the upward momentum of a pendulum. They emphasize the importance of mathematical understanding and experimental results, suggesting that much of the conversation is speculative without solid evidence. The need for clear mathematical definitions is highlighted, particularly in distinguishing between theoretical constructs and practical implications. Ultimately, the conversation underscores the complexity of energy concepts in physics and the necessity of rigorous analysis.
Paige_Turner
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A rising but slowing pendulum...
Does "absorbing" negative energy from gravity cancel the upward momentum of the pendulum?
Or what?
Where can I see energy being negative? Does it repel stuff?
It sounds impossible.
 
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All we really know is that the pendulum slows down.. You need to know the math and the experimental result. The rest of it is made up, so we can make the words mean anything we wish
 
Paige_Turner said:
Does "absorbing" negative energy from gravity cancel the upward momentum of the pendulum?
Write down the actual math. Is there any "energy" in it that is negative? (Hint: you can write down the math so that there is, but it won't mean what you seem to think it means.) You can even use the Newtonian math, which is simpler.
 

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In an inertial frame of reference (IFR), there are two fixed points, A and B, which share an entangled state $$ \frac{1}{\sqrt{2}}(|0>_A|1>_B+|1>_A|0>_B) $$ At point A, a measurement is made. The state then collapses to $$ |a>_A|b>_B, \{a,b\}=\{0,1\} $$ We assume that A has the state ##|a>_A## and B has ##|b>_B## simultaneously, i.e., when their synchronized clocks both read time T However, in other inertial frames, due to the relativity of simultaneity, the moment when B has ##|b>_B##...
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