Classical mechanics: Square well with Bounded particle

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Negative energy is possible in classical mechanics, as potential energy can be adjusted by adding or subtracting a constant value uniformly. The example of gravitational potential energy illustrates that the reference point for height can vary, affecting the perceived energy. The discussion also indicates that further assistance with the problem should be sought in the homework forum, adhering to specific posting guidelines. The thread has been closed for further comments. Understanding energy reference points is crucial in classical mechanics.
Jozefina Gramatikova
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My question is can we have negative energy in classical mechanics? Also I would need help for finding the velocity in part b)
 

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Can we have negative TOTAL energy in classical mechanics?
 
Jozefina Gramatikova said:
Can we have negative TOTAL energy in classical mechanics?
Yes, because you can always add or subtract an arbitrary constant from the potential as long as you do it everywhere. The potential energy of an object in the Earth's gravity Is ##U=mgh## - but do I measure the height from sea level or from where I'm standing, or somewhere else?

For the rest of the problem, we're going to ask you to repost this question in the homework forum and using the homework template as the forum rules requires. This thread is closed.
 

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