Quick questions on Newton's law of universal gravitation: WACE Year 12 Physics Unit 3

Q: What is surface gravity?

Putting one mass as a planet M and the other as a test mass m at the surface (radius r), the weight is mg=GMm/r^2, so

1short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is surface gravity?

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Putting one mass as a planet

M

and the other as a test mass

m

at the surface (radius

r

), the weight is

mg=GMm/r^2

, so

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