Question
Show that ratio of electric to gravitational interaction between two protons is of the order of 1036.
Solution
The gravitational force between two masses is,
The electrostatic force between two charges is,
Therefore,
For proton:
Mass of protons,
Charge on proton,
So ratio of electric to gravitational force is,
The electrostatic force between two charges is,
Therefore,
For proton:
Mass of protons,
Charge on proton,
So ratio of electric to gravitational force is,
