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NEET2020PhysicsGravitationActual

A body weighs 72   N on the surface of the earth. What is the gravitational force on it, at a height equal to half the radius of the earth?

Options

  1. A32   N
  2. B30   N
  3. C24   N
  4. D48   N

Correct answer

A. 32   N

Step-by-step solution

W s = m g s = 72   N W h = m g h = m g s 1 + h R 2 = 72   N 1 + R / 2 R 2 = 72 9 / 4 W h = 32   N

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