Posted by krista on Tuesday, April 27, 2010 at 3:37pm.
Get the velocity of the earth in its orbit from
V = (2 pi R)/P
P is the orbital period, which is one year converted to seconds. R is the Earth's orbital radius.
The centripetal acceleration of the Earth is a = V^2/R.
The force exerted on the Earth by the sun is Me * a
where Me is the mass of the Earth.
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