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Fields and their consequences (A-level only)

Fields and their consequences (A-level only)

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Question 117

A scientific probe is in a stable circular orbit at a distance of 2R 2R\,2R from the centre of a spherical planet of radius R R\,R and uniform density ρ\rhoρ. The orbital speed of the probe is vvv.

What is the mean density ρ \rho\,ρ of the planet?

A

3v24πGR2\frac{3v^2}{4\pi G R^2}4πGR23v2​

B

3v22πGR2\frac{3v^2}{2\pi G R^2}2πGR23v2​

C

3v2πGR2\frac{3v^2}{\pi G R^2}πGR23v2​

D

9v24πGR2\frac{9v^2}{4\pi G R^2}4πGR29v2​

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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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