Gravitational forces and fields

Question 1

what is a gravitational field?

Answer 1

a gravitational field surrounds any object with a mass and extends forever.

Question 2

What are the properties of the gravitational field?

Answer 2

• the farther it extends, the weaker the force becomes.
• the greater the mass, the greater the gravitations force
• If an object moves in the field, work has been.

Question 3

what is newtons law of universal gravitation?

Answer 3

force due to gravity decreases as distance increases.

Fg is inversely proportional to the square of the distance between the centre of mass

Question 4

For QCE calculations for orbits are simplified to being circles therefore, Fg = Fc

Answer 4