Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Gravitation

Question:

Conventionally, the magnitude of gravitational potential energy for an object at infinity from the earth is : ((M = Mass of the earth; m = Mass of the object at infinity; R = Radius of the earth).

Options:

-(G*M)/R2

-(G*M)/R

-(G*M*m)/R

Zero

Correct Answer:

Zero

Explanation:

Gravitational Potential Energy (U) = -(G*M*m)/r

At infinity, r → infinity

Therefore, U → 0.