In both cases force is being applied?

  • Context: Undergrad 
  • Thread starter Thread starter Miraj Kayastha
  • Start date Start date
  • Tags Tags
    Applied Force
Click For Summary

Discussion Overview

The discussion revolves around the concept of potential energy in systems involving charges, specifically comparing the interactions between like charges and opposite charges. Participants explore the implications of force application in these scenarios, focusing on the relationship between work done and changes in potential energy.

Discussion Character

  • Conceptual clarification, Debate/contested, Technical explanation

Main Points Raised

  • One participant notes that pushing a positive charge towards another positive charge increases the potential energy of the system.
  • Another participant suggests that the direction of the force affects the work done, leading to opposite changes in potential energy when comparing like and opposite charges.
  • A question is raised about whether negative work done corresponds to a loss in potential energy.
  • Another participant proposes that negative work could also indicate a loss in kinetic energy.
  • One participant argues that the system becomes more stable when a negative charge is closer to a positive charge, suggesting that the work done in this case represents energy stored in the system that is released as the charges come together.

Areas of Agreement / Disagreement

Participants express differing views on the implications of work done and potential energy changes, indicating that the discussion remains unresolved with multiple competing perspectives.

Contextual Notes

There are assumptions regarding the definitions of work, potential energy, and stability that are not explicitly stated, which may influence the interpretations of the claims made.

Miraj Kayastha
Messages
80
Reaction score
0
If a positive charge is pushed towards another positive charge then the potential energy of the system increases.

When negative charge attracts positive charge why doesn't the system gain potential energy?

In both cases force is being applied?
 
Physics news on Phys.org
The direction of the force is opposite, so the work done is opposite and therefore the change in potential energy is opposite.
 
Does negative work done mean loss in potential energy?
 
Or loss in KE, yes.
 
the system would be more stable if the negative charge was closer to the positive charge , so the work done * energy spent * was actually energy stored in the system that was released to pull the charges together
 

Similar threads

  • · Replies 9 ·
Replies
9
Views
3K
  • · Replies 9 ·
Replies
9
Views
3K
  • · Replies 18 ·
Replies
18
Views
2K
Replies
6
Views
2K
  • · Replies 20 ·
Replies
20
Views
4K
  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 9 ·
Replies
9
Views
4K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 9 ·
Replies
9
Views
3K
  • · Replies 2 ·
Replies
2
Views
4K