Newton's Law of Gravitation and Coulomb's Law
This slide strives to get across two things:
1.) How similar Newton's Law of Gravitation is to Coulomb's Law. They are both inverse square laws that show a force spreading out as you move away from it. The gravitational field g and the electric field E are drawn on the left two pictures, they can be seen as a measure of how much space is warped. The pictures of the fields show where the force of gravity or electricity would be pointing in the various locations, and the strength of the field can be seen in how close together or far apart the arrows are at each location.
2.)Key differences
a.) Gravity is only attractive, things only fall towards earth, never away.
b.) Gravity is about ten billion times ten billion times weaker than electricity (look at the relative values of k and G.)
Newton's Law of Gravitation and Coulomb's Law
This slide strives to get across two things:
1.) How similar Newton's Law of Gravitation is to Coulomb's Law. They are both inverse square laws that show a force spreading out as you move away from it. The gravitational field g and the electric field E are drawn on the left two pictures, they can be seen as a measure of how much space is warped. The pictures of the fields show where the force of gravity or electricity would be pointing in the various locations, and the strength of the field can be seen in how close together or far apart the arrows are at each location.
2.)Key differences
a.) Gravity is only attractive, things only fall towards earth, never away.
b.) Gravity is about ten billion times ten billion times weaker than electricity (look at the relative values of k and G.)