Universal Law of Gravitation Seo Physics Universal Gravitation

Universal Law of Gravitation Seo Physics

Universal Gravitation What is Universal Gravitation? Force which is directly proportional to the product of two masses Equation? G = universal gravitation constant G = 6. 67 x 10 -11 N m 2/ kg 2 m = mass of an object r = distance between the center of mass of the two objects

Gravitational Force What Any is a Gravitational Force? two masses that exert on each other Example of action-reaction pair

Practice A 1 kg object is located at a distance of 6. 4 x 106 m from the center of a larger object whose mass is 6. 0 x 1024 kg. Find the gravitational attraction between them.

DIY Two spherical objects have masses of 1. 5 x 105 kg and 8. 5 x 102 kg. Their centers are separated by a distance of 2500 m. Find the gravitational attraction between them.

Gravitational Field What is Gravitational Field? Strength planets of field where there is a force of attraction in different Equation? g = G m/ r 2 m= mass of planet g = gravitational field strength r = radius of planet G = universal gravitation constant = 6. 67 x 10 -11 N m 2/ kg 2

Practice Compute g at a distance of 4. 5 x 107 m from the center of a spherical object whose mass is 3. 0 x 1023 kg.

DIY Compute g for the surface of the sun. Its radius is 7. 0 x 10 8 m and its mass is 2. 0 x 1030 kg.

Important Concepts Fg exists between two masses, regardless of: the medium separating them their size or composition