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JEE Main202125 Feb 2021Evening ShiftPhysicsGravitationActual

The initial velocity v i required to project a body vertically upward from the surface of the earth to reach a height of 10 R , where R is the radius of the earth, may be described in terms of escape velocity v e such that v i = x y × v e . The value of x will be

Correct answer

0

Step-by-step solution

- G M m 11 R = - G M m R + 1 2 m v 2 ⇒ v = 20 G M 11 R

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