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JEE Main Physics question

PhysicsGravitationJEE Main

A spaceship is launched into a circular orbit close to the earth's surface. The additional velocity that should be imparted to the spaceship in the orbit to overcome the gravitational pull is (Radius of earth = 6400 km and )

Answer: (C)

Solution

Orbital speed close to the surface ; escape speed . The additional speed needed is .

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Question ID VK-154490