Help on finding an expression for the radial force

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SUMMARY

The discussion centers on deriving the expression for the radial force between two particles based on their potential energy, which is inversely proportional to their separation distance, d. The potential energy (PE) is expressed as PE = 1/d. To find the radial force, one must utilize the relationship between force and potential energy, specifically through the formula F = -d(PE)/d(d). This leads to the conclusion that the radial force can be expressed as F = -1/d², indicating that the force increases as the particles get closer together.

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  • Understanding of potential energy concepts in physics
  • Familiarity with the relationship between force and potential energy
  • Knowledge of calculus, specifically differentiation
  • Basic grasp of particle interactions in classical mechanics
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Homework Statement



The potential energy of a system of two particles is inversely proportional to their separation, d. Find an expression for the radial force that each particle exerts on the other.

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The Attempt at a Solution


I'm really stuck on this one guys (and girls). PE=1/d, or at least I'm pretty sure. But how does that relate to the radial force?
 
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