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Gravitational fields (A-level only)

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Question 5

A reconnaissance satellite orbits Mars in a circular path at an altitude equal to the mean radius of Mars, RMR_MRM​.

Mass of Mars, M=6.42×1023 kg \text{Mass of Mars, } M = 6.42 \times 10^{23} \text{ kg} Mass of Mars, M=6.42×1023 kg Mean radius of Mars, RM=3.39×106 m \text{Mean radius of Mars, } R_M = 3.39 \times 10^6 \text{ m} Mean radius of Mars, RM​=3.39×106 m Gravitational constant, G=6.67×10−11 N m2 kg−2 \text{Gravitational constant, } G = 6.67 \times 10^{-11} \text{ N m}^2 \text{ kg}^{-2} Gravitational constant, G=6.67×10−11 N m2 kg−2

What is the angular speed of the satellite in this orbit?

A

1.0×10−3 rad s−11.0 \times 10^{-3} \text{ rad s}^{-1}1.0×10−3 rad s−1

B

7.4×10−4 rad s−17.4 \times 10^{-4} \text{ rad s}^{-1}7.4×10−4 rad s−1

C

3.7×10−4 rad s−13.7 \times 10^{-4} \text{ rad s}^{-1}3.7×10−4 rad s−1

D

1.4×10−7 rad s−11.4 \times 10^{-7} \text{ rad s}^{-1}1.4×10−7 rad s−1

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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