6.1 Gravitational Fields

Question 1

Newtons Law of Universal Gravitation

Answer 1

Every particle of matter in the universe attract every other particle with a force which is directly proportional to the product of their masses and inversely proportional to the square of their distance apart.

Question 2

Define Gravitational Field Strength.

Answer 2

Gravitational field strength is the force per unit mass on a mass at a particular point.

Question 3

Geostationary Orbit

Answer 3

A geosynchronous orbit has an orbit with a fixed period of 24 hours.
i.e. tele-communications

Question 4

Define Gravitational Potential.

Answer 4

The work done from moving a unit mass from infinity to that point.