Direction of areal velocity of earth around sun ?

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7.Gravitation

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

Option A

Option B

Option C

Option D

Solution

Areal velocity,

$\frac{d \mathrm{~A}}{d t}=\frac{\mathrm{L}}{2 m}=\frac{r \times m v}{2 m}=\frac{1}{2}(r \times v)$

Where $\mathrm{L}$ is the angular momentum and $m$ is the mass of the earth.

Hence, the direction of areal velocity $\left(\frac{d \mathrm{~A}}{d t}\right)$ is in the direction of $(r \times v)$.

Standard 11

Physics

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