# Radial acceleration of the earth

1. Oct 30, 2004

### UrbanXrisis

I need to find the radial acceleartion of the earth @ the equator

a=v^2/r
a= [1041m/s)^2]/6378000m
a= 0.17 m/s^2

is this correct?

2. Oct 30, 2004

### UrbanXrisis

whoops, did that wrong

okay...the equation to find radial acceleartion is a=v^2/r

v=the velocity the earth is traveling at, which I looked up was 1041mi/hr at the equator. This then converts to 17.35 mi/s and then 28 km/s.

Then for r, I looked up that the radius of the earth is 6378km. Then...
a= [28km/s)^2]/6378km
a=0.1229 km/s^2
a=122.9 m/s^2

I am still confused...did I do this correct?

Last edited: Oct 30, 2004