[prettyboy_bn]

" Jupiter has lots of moons, four of which can be seen using a good pair of binoculars or a small telescope. Explain how observations of the motions of the Moons of a planet enable the mass of the planet to be calculated" ?
Thanks

[Coursework.info]

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[teachercol]

Period and radius of orbit

GMT^2 = 4 pi^2 r^3

[prettyboy_bn]

Thanks but how do you find period and radius of it?

[apocalipse117]

Originally Posted by prettyboy_bn

Thanks but how do you find period and radius of it?

the question doesn't need you to do it, just explain how one might.
you'd observe the motion of the moon over a period of a few months and from these observations you can calculate the time period and radius