The strong force is that force which cause the basic pieces of an atom to hold together. The weak force is radiation; this force is instrumental in things decaying. Electro-magnetism is the charged field which surrounds iron based materials or objects.
The familiar force of gravity pulls you down into your seat, toward the Earth's center. You feel it as your weight. ... Gravity and electromagnetism are just two of the four fundamental forces of nature, specifically two that you can observe every day.
