(SIMPLE GRAVITY QUESTION!) A 250 gram apple falls to the ground. Using the equation for gravitational force, determine the mass of the Earth. (assume the distance between the apple and the center of the Earth is the Radius of the Earth: 6,400km)

Question

manish00333 · Answer

i actually got 6.02*10^18 
which seems more likely but is still not the mass of the earth..

irishboy123 · Answer

show your workings, please.

manish00333 · Answer

@irishboy123 here you go:

astrophysics · Answer

Please put units in your work otherwise it's very confusing, also use meters for distance.

astrophysics · Answer

|dw:1435181108646:dw| it's best if you do the algebra first. So please can you do that now?

astrophysics · Answer

Also note, the mass of the apple will get cancelled out so you just need, |dw:1435181298393:dw|