Classical mechanics: Square well with Bounded particle

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SUMMARY

The discussion centers on the concept of negative energy in classical mechanics, specifically in the context of a bounded particle in a square well potential. It is established that negative total energy is permissible by adjusting the reference point of potential energy, as demonstrated with the equation U = mgh. The conversation also emphasizes the importance of consistent reference points when measuring potential energy. Additionally, participants are directed to repost their questions in the homework forum following the specified template.

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  • Understanding of classical mechanics principles
  • Familiarity with potential energy concepts
  • Knowledge of the square well potential model
  • Basic mathematical skills for manipulating equations
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  • Research the implications of reference points in potential energy measurement
  • Explore the square well potential model in greater detail
  • Study the concept of total energy in classical mechanics
  • Learn about the role of arbitrary constants in energy equations
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Students of physics, educators teaching classical mechanics, and anyone interested in the nuances of energy concepts in physical systems.

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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