1. Gravity and Orbits

2. What is Gravity?

3. Newton’s Law of Gravitation The attractive force of gravity between particles is proportional to the product of their masses and inversely proportional to the square of the distance between them.

5. Center of Gravity For force of gravity effectively acts at a single point of an object called the center of gravity Center of Gravity, the point at which all of the weight of an object appears to be concentrated. If an object rotates when thrown, the center of gravity is also the center of rotation. When an object is suspended so that it can move freely, its center of gravity is always directly below the point of suspension. An object can be balanced on a sharp point placed directly beneath its center of gravity. It is important for automobiles and trucks to have their centers of gravity located close to the road, because a low center of gravity gives them stability.

6. Center of Gravity Equation

7. Guided and Independent Practice