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April 19, 2014

April 19, 2014

Posted by **Anonymous** on Tuesday, July 24, 2012 at 12:08pm.

I KNOW THIS MUCH----- confuesed what to plug in where. and what not to plug in. The weight is equal ‘mg”

On the Earth surface acceleration due to gravity is

mg=GmM/R²,

g=G•M•/R²,

where

the gravitational constant G =6.67•10^-11 N•m²/kg²,

Earth’s mass is M = 5.97•10^24 kg,

Earth’s radius is R = 6.378•10^6 m.

g=9.8 m/s²

Let's find “g” at the height “h” . Distance between the mas “m” (the person) and the center of the Earth is 2R =>

m•g1= G•m•M/(2R)²

g1= G•M/4R²=g/4

In the "high" building mg1= mg/4

•answered below - Damon, Monday, July 23, 2012 at 7:32pm

if r = 2R then r^2 = 4 R^2

then weight = (1/4) original

•PHYSICS! okay so would it be

(6.67*10^-11)(5.97*10^24)(77.87)/4(6.378*10^6)^2?!?!?!

- PHYSICS HELP! -
**Damon**, Tuesday, July 24, 2012 at 12:42pm175/4

- PHYSICS HELP! -
**Damon**, Tuesday, July 24, 2012 at 12:43pmRead the HINT !!!

- PHYSICS HELP! -
**Anonymous**, Tuesday, July 24, 2012 at 1:37pmokay sorry i dont understand physics. where did you get the 4 from? 2^2?!

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