Question

Identify the correct definition of gravitational potential at a point.

• A. it is defined in terms of the force required to displace a unit mass from infinity to that point
• B. it is defined in terms of the force required to move a unit mass from the surface of earth to that point
• C. it is defined in terms of the force required to displace a unit mass from that point to infinity
• D. none of these

Answer 1

Answer: (D)

In all the options given, the term force is used. But gravitational potential at a point is defined in terms of the work done in displacing a unit mass from infinity to that point without change in kinetic energy.