The Earth may be considered to be a uniform sphere of radius 6.4 × 10⁶m with its mass of 6.0 x 10²⁴ kg concentrated at its centre. A satellite of mass 2.4 x 10³ kg is launched from the Equator. It is placed in an equatorial orbit at a height of 5.6 × 10⁶ m above the Earth's surface.

Q: What topic does this question test?

This question tests Gravitational fields in A-Level Physics (syllabus code 9702). It is worth 9 marks.

Q: Which exam paper is this question from?

This question appeared in the Cambridge A-Level Physics Oct/Nov 2020 examination, Paper 4 Variant 2 (9702_w20_qp_42.pdf).

Question

The Earth may be considered to be a uniform sphere of radius 6.4 × 10⁶m with its mass of 6.0 x 10²⁴ kg concentrated at its centre. A satellite of mass 2.4 x 10³ kg is launched from the Equator. It is placed in an equatorial orbit at a height of 5.6 × 10⁶ m above the Earth's surface.

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The Earth may be considered to be a uniform sphere of radius 6.4 × 10⁶m with its mass of 6.0 x 10²⁴ kg concentrated at its centre. A satellite of mass 2.4 x 10³ kg is launched from the Equator. It is placed in an equatorial orbit at a height of 5.6 × 10⁶ m above the Earth's surface.

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