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A spaceship is launched into a circular ...

A spaceship is launched into a circular orbit close to the earth's surface . What additional velocity has now to be imparted to the spaceship in the orbit to overcome the gravitational pull. Radius of earth `= 6400 km`, `g = 9.8m//s^(2)`.

A

3.285 km/sec

B

32.85 m/sec

C

11.32 km/sec

D

7.32 m/sec

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