Gravitational Fields

Question 1

Equipotential

Answer 1

A plane of points with equal gravitational potential
Work done across an equipotential is zero

Question 2

Geostationary orbit

Answer 2

An orbit with the time period of one day and stays over one point on the Earth’s surface
Directly above the equator and travels in the same direction as the Earth’s rotation

Question 3

Gravitational field

Answer 3

Region of space where objects with mass experience an attractive force due to gravity

Question 4

Gravitational field strength

Answer 4

Gravitational force on an object divided by its mass
Acceleration due to gravitational field

Question 5

Gravitational potential

Answer 5

At a point, the amount of work done in moving a unit mass from infinity to that point

Question 6

Low orbit

Answer 6

Orbit height between 160-2000km

Question 7

Newton’s Law of gravitation

Answer 7

Force of gravity is proportional to the product of the masses involved and inversely proportional to the square of the separation of the masses

Question 8

Synchronous orbit

Answer 8

Orbit with a time period of one day so will return to the same point in the sky each day