Gravity's Pull: How Far is the Proton Above the Electron?

[Johann0101]

Homework Statement

An electron is held up against the force of gravity by attraction of a fixed proton some distance above it. How far above the electron is the proton?

Relevant Equations

Electrical force, Electric Fields equations.

An electron is held up against the force of gravity by attraction of a fixed proton some distance above it. How far above the electron is the proton?

 

[BvU]

Hello @Johann0101 ,

!​

PF is here to help you with your exercises, not to do them for you. See guidelines.
So we want you to list the relevant equations and post an attempt at solution.
What equations do you have available in your toolkit that could help you here ?

What also helps: make a sketch of the situation and draw a few forces

 

[Delta2]

Focus your attention at the electron. Which are the two forces that act upon it? (neglecting the gravitational force between the proton and the electron which would give a 3rd force.) What should be the difference of these two forces since the electron is held fixed in its position?