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Gravitational fields

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Question 7

Which of the following expressions does not have the same SI base units as gravitational potential?

In these expressions:

$g\,$ is the gravitational field strength at the surface of a planet of radius $R$
$v\,$ is the escape velocity from the planet's surface
$EpE_{\text{p}}$ is the gravitational potential energy of a satellite of mass $m$
$G\,$ is the gravitational constant and $M\,$ is the mass of the planet

A

$v^2$

B

$g R$

C

$GMR2\frac{GM}{R^2}$

D

$Epm\frac{E_{\text{p}}}{m}$

Markscheme

Gravitational fields Questions

A Level
Physics
Gravitational fields

31 exam-style questions on OCR A A Level Physics Gravitational fields, covering Point and spherical masses, Newton's law of gravitation, Planetary motion, and Gravitational potential and energy. Each one has a worked solution and a mark scheme showing where the marks go.

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