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Gravitational fields (A-level only)

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Question 3

A planet has radius R R\,R and the acceleration due to gravity at its surface is ggg. What is the escape velocity for a probe of mass m m\,m when launched from an altitude equal to the planet's radius R R\,R above its surface?

A

gR2\sqrt{\frac{gR}{2}}2gR​​

B

gR\sqrt{gR}gR​

C

2gR\sqrt{2gR}2gR​

D

2gRm\sqrt{\frac{2gR}{m}}m2gR​​

Markscheme

Gravitational fields (A-level only) Questions

  1. A Level
  2. /Physics
  3. /Gravitational fields (A-level only)

52 exam-style questions on AQA A Level Physics Gravitational fields (A-level only), covering Newton's law (A-level only), Gravitational field strength (A-level only), Gravitational potential (A-level only), and Orbits of planets and satellites (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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