Speed or turning point using energy

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SUMMARY

The discussion revolves around solving a physics problem involving energy conservation, specifically focusing on kinetic energy (KE) and potential energy (PE) transitions as a particle moves along a defined path. Key equations include the conservation of energy equation Ei = Ef and the relationship between work, force, and distance (F*d = W = E). Participants clarify the importance of correctly identifying potential energy changes and the implications of energy conservation at turning points, ultimately leading to the correct calculation of distances and forces involved in the problem.

PREREQUISITES
  • Understanding of conservation of energy principles in physics.
  • Familiarity with kinetic energy (KE) and potential energy (PE) equations.
  • Knowledge of linear interpolation methods for energy calculations.
  • Ability to apply force-distance relationships in work-energy problems.
NEXT STEPS
  • Study the principles of conservation of energy in mechanical systems.
  • Learn about linear interpolation techniques in physics problems.
  • Explore the relationship between work, force, and energy in detail.
  • Practice solving problems involving kinetic and potential energy transitions.
USEFUL FOR

Students studying physics, educators teaching energy conservation concepts, and anyone seeking to improve their problem-solving skills in mechanics.

  • #31
jbriggs444 said:
We go for correct answers here. Not answers that we think the answer key thinks are correct.
Have you calculated the result? Because I get an answer that is compatible with the answer key.
 
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  • #32
DrClaude said:
Have you calculated the result? Because I get an answer that is compatible with the answer key.
I rechecked and you are correct.

Edit: Thinking back, I'd double-dipped on the 20J of initial potential energy, both adding it to the initial total energy and subtracting it from the potential barrier left to overcome, leaving just enough energy to make it past.
 
Last edited:

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