Question

1) discuss the role of mass on the force of gravity citing specific examples.

2) discuss the role of distance/radius on the force of gravity citing specifc examples.

3) identify Newton's Universal Law of Gravity in its simplified version.

4)  identify the factor that has the greatest influence on the force of gravity between tow objects.

Answer 1

Newton's law of gravitation,

F= GMm/r²

1. Force of gravity is directly proportional to mass M.

For example, the force of gravitation of Jupiter is too greater than earth as it is too massive than earth.

2. From, Newton's law of gravitation, Force of gravitation is inversely proportional to square of radius of the planet.

Example, Radius of moon is too smaller than earth hence its force of gravitation is also too lower than earth.

3. Newton's law of gravitation: the force of gravitation between two masses is directly proportional to their masses and inversely proportional to the square of distance between them.

4. As the distance between them influence the force in squared, so it is the main factor influence the force at its max.