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A satellite circles a planet of unknown ...

A satellite circles a planet of unknown mass in circular orbit of radius `2xx10^(7)m`. The magnitude of the gravitational forcce exerted on the satellite by the planet is 80 N . The kinetic energy of satellite in this orbit in joule is

A

`9xx10^(8)`

B

`8xx10^(8)`

C

`7xx10^(8)`

D

`6xx10^(8)`

Text Solution

Verified by Experts

The correct Answer is:
b
`"K.E. "=(1)/(2)"F r"`
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NIKITA PUBLICATION-GRAVITATION-Multiple Choice Questions
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