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What is the direction of areal velocity ...

What is the direction of areal velocity of the earth around the sun?

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Areal velocity of the earth around the sun is given by
`(dA)/(dt) = (L)/(2m)`
where, L is the angular momentum and m is the mass of the earth
But angular momentum `L = r xx p = r xx mv`
`:.` Areal velocity `((dA)/(dt)) = (1)/(2m) (r xx mv) = (1)/(2) (r xx v)`
Therefore, the direction of area velocity `((dA)/(dt))` is in the direction of `(r xx v)` i.e., perpendicular to the plane containing `r` and `v` and directed as given by right hand rule
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