Newtons+Law+of+Universal+Gravitation

__Newtons Law & Universal Gravitation __

**Issac Newton believed that gravitation forces were responsible for the acceleration of objects on the moon & on the earth.**
 * Example:** suppose we fire a cannon horizantally from a mountain : the projectile will eventually fall to earth

Newton concluded that any 2objects in the universe exert gravitational attraction on each other.- Newtons law of universal gravitation applies to ALL.

As the mass of either object or both object increses, the force of gravitational attraction increases.
 * Universal Gravitation & Mass**