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 satell
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)`
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