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For a satellite to orbit around the eart...

For a satellite to orbit around the earth, which of the following must be true?

A

It must be above the equator at some time

B

It cannot pass over the poles at any time

C

Its height above the surface cannot exceed 36,000 km

D

Its period of rotation must be `gt 2pi sqrt(R//g)` where R is radius of earth

Text Solution

Verified by Experts

The correct Answer is:
A, D
`T= 2pi sqrt((r^(3))/(GM))`
`T_(min)=2pi sqrt((R^(3))/(GM))`
`T_(min)=2pi sqrt((R )/(g))`
So choice (A) and (D) are correct choice.
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