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NEET2002PhysicsGravitationActual

A body of mass m is placed on Earth's surface which is a taken from Earth's surface to a height of h=3 R , then the change in the gravitational potential energy is:

Options

  1. Am g R 4
  2. B2 3 m g R
  3. C3 4 m g R
  4. Dm g R 2

Correct answer

C. 3 4 m g R

Step-by-step solution

aligned & change in GPE = final & energy - initial energy & =- G M m 4 R + GMm R & =- G M m 4 R [1- 1 4 ]= 3 4 G M m 4 R & = 3 4 G M R^2 m R= 3 4 g m R aligned

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