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Fields and their consequences (A-level only)

Fields and their consequences (A-level only)

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Question 28

A planet of radius R R\,R has an acceleration due to gravity at its surface of ggg. A spacecraft of mass m m\,m is in a stable circular orbit around the planet at an altitude where the local gravitational field strength is g9\displaystyle \frac{g}{9}9g​.

What is the orbital speed of the spacecraft?

A

13gR\frac{1}{3}\sqrt{gR}31​gR​

B

12gR\frac{1}{2}\sqrt{gR}21​gR​

C

gR3\sqrt{\frac{gR}{3}}3gR​​

D

2gR3\sqrt{\frac{2gR}{3}}32gR​​

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Fields and their consequences (A-level only) Questions

  1. A Level
  2. /Physics
  3. /Fields and their consequences (A-level only)

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