Topic Menu

Cyber-chess a chess instruction site

Gravitational Fields Questions

Q3.

(a)

(i) Explain what is meant by the gravitational field strength at a point in a gravitational field.

(ii) State the SI unit of gravitational field strength.

(2 marks)

(b) Planet P has mass M and radius R. Planet Q has a radius 3R. The values of the gravitational field strengths at the surfaces of P and Q are the same.

(i) Determine the mass of Q in terms of M.

(ii) The graph shows how the gravitational field strength above the surface of planet P varies with distance from its centre.

An a line to the graph to show the variation of the gravitational field strength above the surface of Q over the range shown.

(6 marks)

(Total 8 marks)