NTA Abhyas JEE Main2020PhysicsWork, Power and EnergyPractice
A mass m on the surface of the Earth is shifted to a target equal to the radius of the Earth. If R is the radius and M is the mass of the Earth, then work done in this process is
Options
- Am g R 2
- Bm g R
- C2 m g R
- Dm g R 4
Correct answer
A. m g R 2
Step-by-step solution
Work done = ∆ P E = - G M m R + R - - G M m R = G M m 2 R = m g R 2