Question

The earth moves around the sun in an elliptical orbit as shown in the figure. The ratio, `"OA"/"OB"` = x. The ratio of the speed of the earth at Band at A is ______.

Options

• `sqrt("X")`

• X

• `"X"sqrt("X")`

• `"X"^2`

Answer 1

The earth moves around the sun in an elliptical orbit as shown in the figure. The ratio, `"OA"/"OB"` = x. The ratio of the speed of the earth at Band at A is X.

Explanation:

According to law of conservation of angular momentum; `"mv"_"A" xx "OA" = "mv"_"B" xx "OB"`;

`therefore "V"_"B"/"V"_"A" = "OA"/"OB"` = x