A rocket is launched straight up from the surface of the earth. When its altitude is 
of the
radius of the earth, its fuel runs out and therefore it coasts. If the rocket has to escape from the gravitational pull of the earth, the minimum velocity with which it should coast is (Escape velocity on the surface of the earth is 
.)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
If the rocket has to escape from the gravitational pull of the earth from 
.
Then, the potential energy at the altitude, 
kinetic energy
escape velocity of rocket from 
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