Question

Please Please help!

Inside the earth it is only the mass in the sphere beneath you that contributes to the gravitational pull on you. Assume that the Earth is a sphere of uniform density. What is the gravitational field strength halfway to the centre of the Earth? And three-quarters of the way to the centre of the Earth? Write down the general rule for the variation of g with distance from the centre of the Earth to its surface.

Thank you!

Answer 1

\[F _{g} = \frac{ Gm }{ r ^{2}}\]

m = 5.97*10^24 kg
r = 6.37*10^6m
G = 6.67*10^-11Nm^2Kg^-2

now, obviously r changes, depending on where abouts you want to measure it from :)

Answer 2

Hope it helps

Answer 3

Thank you so much!!!!

Answer 4

algood bro :)