Gravtation Field

Question 1

Gravitational field strength definition

Answer 1

Newtons on a 1 kg test mass in a Gravitational field

Question 2

Gravitational potential

Answer 2

Joules of KE for an object to go to infinity from the surface in a Gravitational field

Question 3

Gravitational force

Answer 3

Newtons applied to a test mass inside a Gravitational field

Question 4

Gravitational potential energy

Answer 4

Energy store by an object inside a Gravitational field field at distance r from the centre of mass

Question 5

Why is Gravitational potential negative

Answer 5

At infinity v = 0 so it’s always lower than 0

Question 6

Kepler’s law

Answer 6

T^2 = kr^3

Question 7

What is a radial field

Answer 7

All field line and Gravitational field strength point to the centre

Question 8

Uniform field

Answer 8

Where Gravitational field strength is equal strength and parallel

Question 9

In a graph with force of gravity on a 1kg mass and distance to centre of planet what is area under the graph

Answer 9

Work done

Question 10

Define Escape velocity

Answer 10

Minimum velocity at surface to leave gravitational field without additional energy input