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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

2.458 km/s

B

5.343 km/s

C

3.278 km/s

D

4.811 km/s

Text Solution

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The correct Answer is:
C
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