FORCE

[Science Tim No.5034874]

Hello my fellow /sci/ geeks, I really need help with this question in for my homework! Please help out :) (NOTE: Even my techer can't figure it out, so if you solve it, you are better than a higschool senior teacher at physics)

"The earth's gravityforce on a marble with the mass of 1,0kg is 9,8N on the earth's surface. Let us imagine that we place the marble outside of the earth at a distance of twice the radius of the earth from the earth's center point."
Question: "At a certain distance the force is 4,9N. What is the distance?"

(Don't forget a calculation/explanation of how you solved it)
I appreciate all the answers that you come with! Don't let me down!

[Anonymous No.5034880]

http://en.wikipedia.org/wiki/Newton's_law_of_universal_gravitation

Solve for r, or be a boss and just write down: Earth's Radios multiplied by the square root of two.

[Anonymous No.5034881]

>Even my techer can't figure it out

For blatantly lying like a little piece of shit, you're not getting anything from me, and I hope no-one else helps your bullshitting ass.

[Anonymous No.5034882]

>>5034881

some techers are bad and you should feel bad

[Anonymous No.5034888]

9019km according to wolfram alpha. Solve the rest yourself

[Anonymous No.5034930]

>>5034882
Even in third world countries, you need a license to be allowed to teach anything, let alone be employed by an educational facility.