Thursday, January 14, 2010

Irodov Problem 3.1

The electrostatic force between two particles of charge q that are distance d apart is given by,




The gravitational force between two particles of the mass m that are distance d apart is given by,




The ratio is thus given by,




Now knowing that,










we can compute,










In order for the two forces to be equal,








These values indicate how dramatically weak gravity is in comparison to electrostatic forces.