Coulomb’s Law: Electric Force, Field and Potential

You should be very familiar with gravitational field.  Your mass has been interacting with Earth’s gravitational field during your entire lifetime.  You have observed other masses in Earth’s gravitational field in your experiences in sports and games.  In this topic, you will determine how the behavior of charges in electric fields is very similar to what you know to be true about gravity.  As you may have already noticed, the main difference between charges and masses is that there are two types of charge, positive and negative, but only one type of mass.  Masses always attract each other, but charges can attract or repel. 

If negative mass was possible, what kinds of changes do you think you might see in your world? Come up with one idea about how negative mass might behave on Earth and post it on the discussion board. How might the presence of a ball with negative mass affect the play of one of your favorite sports?  Read and comment on at least three posts from your classmates.