Newton's Universal Law of Gravitation. Now let's try an interesting variation. What is the gravitational force exerted on you by the Earth? Use Newton's Universal Law of Gravitation. Let's say M1 is the mass of the Earth (5.97 x 10^24 kg) and M2 is the mass of the you (we'll assume a mass of 150 pounds, which needs to be converted to kilograms, which is 68 kg). The distance between the center of the Earth and you is simply the Earth's radius, or 6,378,100 m. These values were taken from your book's appendix. Round off your answer to the nearest whole number.

Note how different this result i

Question

Newton's Universal Law of Gravitation. Now let's try an interesting variation. What is the gravitational force exerted on you by the Earth? Use Newton's Universal Law of Gravitation. Let's say M1 is the mass of the Earth (5.97 x 10^24 kg) and M2 is the mass of the you (we'll assume a mass of 150 pounds, which needs to be converted to kilograms, which is 68 kg). The distance between the center of the Earth and you is simply the Earth's radius, or 6,378,100 m. These values were taken from your book's appendix. Round off your answer to the nearest whole number.

Note how different this result i

anonymous · Answer

I got .18? rounded to the nearest whole number is 0?

anonymous · Answer

did you get 0.18 N as a result or you are just saying that you got x.18 ?

anonymous · Answer

i got .18 as a result

anonymous · Answer

i have no idea of the units, and luckily for me, they're not asked for :)

anonymous · Answer

ah, but you're right, its N. I have a headache, lol

anonymous · Answer

try again tryagain :D

anonymous · Answer

hmmm, it's 67.82N then?

anonymous · Answer

what did you use as G?

anonymous · Answer

6.674x10^-11

anonymous · Answer

actually what I said was wrong it should be a little less of 680N

anonymous · Answer

I keep getting .18N of force, do you square 6378100?

anonymous · Answer

Yea...check this out: http://www.wolframalpha.com/input/?i=+6.674*10^-11+*%28+%285.97*10^24+*+68%29%2F%28+6378100%29^2%29

anonymous · Answer

weird that I keep getting something different, those are the same numbers I'm inputting

anonymous · Answer

maybe I haven't figured out how to use my calculator yet, because inputting those values in that order gets me the same answer

anonymous · Answer

thank you so much

anonymous · Answer

well in any case it should be around 666N because the force of gravity 
G=mg where m=68 kg and g = 9.81 m/s^2
and That is exactly what you are calculating here.

P.S. Do you mind if I erase my wrong comment above, I don't want someone to get confused reading this

anonymous · Answer

no problem, and the answer is 666N, the assignment I'm working on is automatically graded.

anonymous · Answer

hmmm, either you are  pluging in those numbers in incorrectly or your calculator is acting weird.