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Question 18N.2.HL.TZ0.8a.ii

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Date November 2018 Marks available [Maximum mark: 2] Reference code 18N.2.HL.TZ0.8a.ii
Level HL Paper 2 Time zone TZ0
Command term Suggest Question number a.ii Adapted from N/A
a.ii.
[Maximum mark: 2]
18N.2.HL.TZ0.8a.ii

There is a proposal to place a satellite in orbit around planet Mars.

(a.ii)

Newton’s law of gravitation applies to point masses. Suggest why the law can be applied to a satellite orbiting Mars.

[2]

Markscheme

Mars is spherical/a sphere «and of uniform density so behaves as a point mass» ✔

satellite has a much smaller mass/diameter/size than Mars «so approximates to a point mass» ✔

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