(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Hey all, I'm doing an assignment and I was given the formula below, but I'm unsure what one of the constants is.

2. Relevant equations

Acceleration = - μ_{E}r/r^{3}

3. The attempt at a solution

Below the formula it says "where μ_{E}is the gravitational constant for the Earth and r is the position vector of the vehicle". But this is talking about a satellite orbiting Earth, so it can't be 9.8m/s/s, can it?

Am I meant to use μ_{E}= u*m_{1}*m_{2}/r^{2}to find it?

I've used the 'geocentric gravitational constant' elsewhere in the assignment, but it used a different symbol, this isn't it either is it?

Cheers

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: What is this constant in the gravitational acceleration formula?

**Physics Forums | Science Articles, Homework Help, Discussion**