H2P-94

Circular orbits

H2 Physics · JC 1 · Hard · Circular orbits

A satellite of mass 500 kg moves in a circular orbit of radius

7.0 \times 10^6\,\text{m}

around a planet of mass

4.2 \times 10^{24}\,\text{kg}

. Take

G = 6.67 \times 10^{-11}\,\text{N m}^2\text{kg}^{-2}

. What is the orbital speed of the satellite?

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