Space Help!!! (1 Viewer)

[dishab]

Use the mass of earth to determine the gravitational acceleration acting on a meteor of mass 1 tonne at an altitude of 2300KM above the earth surface. I tried using g = Gm/r*2 but got stuffed up answer

 

[Jase]

Did you use mass of earth as the M and (6400+2300) km as the radius (after converting to metres).

 

[Fortify]

Here is my attempt:

F = Gm1m2 / d^2

F = (6.67*10^-11) * (1000) * (6*10^24) / (2300000 + 6400000)^2

F = 5287N

F = ma

a = F / m

a = 5287 / 1000

a = 5.2ms^-2

 

[kaz1]

I used g=GM/r² and 5.32m/s². Are you sure you squared the denominator when using the calculator? Cause that might explain the stuffed up result.

 

[dishab]

Here is my attempt:

F = Gm1m2 / d^2

F = (6.67*10^-11) * (1000) * (6*10^24) / (2300000 + 6400000)^2

F = 5287N

F = ma

a = F / m

a = 5287 / 1000

a = 5.2ms^-2

Ya thats the right answer. i forgot to square the denominator.