Why does the moon revolve around the earth but not the sun? (even if the gravitational force between the sun and moon is twice of the gravitational force between the earth and the moon.)

We know that the gravitational force of attraction keeps the moon revolving around the earth, and the earth revolving around the Sun. However, recall that for the moon to escape the bound of the earth’s gravitational force and fall under the influence of the Sun’s gravity, it must possess a certain velocity. This is what is known as escape velocity.

Determine a relation for the escape velocity by equating the centripetal force of attraction between the moon and the earth and the gravitational...

Define the following terms:a. Universal gravitational constant.b. Gravitation field.c. Acceleration due to gravity.d. Freefall.e. Weightlessness.

a. Universal gravitational constant:
G is defined as the force of attraction between two bodies of mass 1 kg each kept at a distance of 1 m apart from their centers.

b. Gravitational field:
The gravitational field is the field around any body or heavenly body where the force of attraction by that body is experienced.

c. Acceleration due to gravity:
Acceleration produced on a freely falling body due to the influence of gravity is called acceleration due to gravity.

d. Freefall:
When a body is falling...

Write the difference between:a. Gravitational constant (G) and acceleration due to gravity (g).b. Gravity and Gravitation force.c. Gravity and acceleration due to gravity.d. Mass and weight.e. Free...

a. Gravitational constant (G) and acceleration due to gravity (g)

b. Gravity and gravitational force.