A-LevelPhysicsPhysical quantities and units9702/12 · Oct/Nov 2015 · Q31 Mark

The time T taken for a satellite to orbit the Earth on a circular path is given by the equation T² = kr³ / M where r is the radius of the orbit, M is the mass of the Earth and k is a constant. What are the SI base units of k?

Akg⁻¹m⁻³s²

Bkg⁻¹m³s²

Ckg m⁻³s²

Dkg m³s²

✓ Correct answer

C: kg m⁻³s²

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Topic: Physical quantities and units, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2015 Paper 1 Variant 2, question 3.

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