1. The problem statement, all variables and given/known data An object orbits the earth at a constant speed in a circle of radius 6.38 x 106 m, very close to but not touching the earth's surface. What is its centripetal acceleration? 2. Relevant equations a = v2/r = 4[tex]\pi[/tex]2v/T2 v = 2[tex]\pi[/tex]r/T 3. The attempt at a solution I plugged in r = 6.38 x 106 m and T = 24.0 h = (24.0 h x 3600 s / 1 h) = 86,400 s into the equation above and found a = 3.37 x 10-2 m/s2. However, I looked up the centripetal acceleration on the earth's surface and found out it is 0.006 m/s2. I can't understand why my answer is wrong. Can anyone point out the error in my logic? Thanks!