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JEE Main Physics question

PhysicsGravitationJEE Main

A spaceship is in a circular orbit close to the earth's surface. What additional velocity (in km/s) must be imparted to the ship so that it is able to escape the gravitational pull of Earth? ( km, , )

Answer: 3.31

Solution

Orbital velocity near the surface is ; escape velocity is . Additional velocity needed:

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Question ID VK-154802