Hi scientists, I'm ametuer Space Physics researcher, and I have a problem about making an equation; 'Strong Electromagnetic Force Offsets Gravitational Force'

Is there someone can make this one? I will give you more information about this if you need.

Edited August 22, 201411 yr by JPL Space Engineer

Have you drawn a diagram? That's often the first step in a physics problem.

The statement "the electromagnetic force is stronger than gravitation" is popular, but at least not necessarily correct. It is correct for atoms, but incorrect for the earth-moon system where electromagnetic force is so insignificantly small that it is completely neglected.

 

To answer your question: Consider two electrically charged masses at a distance d. Write down the expressions for the gravitational force |F|=G m1 m2 / d² (with m1 and m2 being the masses and G being the gravitational constant) and the force for the electrostatic force |F| = E q1 q2 / d² (with q1 and q2 being the charges and E being some constant that I currently don't know what it equates to - just look it up). You can then compare these values for different combinations of m1, m2. q1, q2 and d. A more detail analysis will also reveal that the distance d in this case is insignificant for the question which force is greater.

 

Hope that helps.