Satellite problem!!
ISRO is planning on launching a telecommunication satellite into space and you are there as a visitor from a contest to watch the preoceedings. Suddenly there is an earth quake and evryone in the control room dies. The computer is also affected and the programs are messed up. The value on the screen for the orbital speed of the satellite is 12 km/s!! which you know is incorrect. What is the correct one?
The answer is 8.
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1 solution
The answer is 8 km/s as a projectile travelling at 8 km/s drops 5 m every second and travels 8 km in a second. The curvature of the earth is also 5m for every 8 km and so the projectile is continuosly in free fall around earth and it stays in orbit. At 12 km/s it will escape from earth's orbit.