The gravitational potential energy (P.E) of a body in the gravitational field of a planet is defined relative to a reference point. According to the discussion, the potential energy is zero when the body is at an infinite distance from the planet. The standard formula for gravitational potential energy, which incorporates a reference point, is essential for understanding this concept. The options presented include the center of the planet, the surface, infinite distance, and a distance equal to the radius of the Earth, with the correct answer being infinite distance.
PREREQUISITESStudents of physics, educators teaching gravitational concepts, and anyone interested in understanding the principles of gravitational potential energy and its reference points.
sphyics said:P.E of a body in the graitational field of planet is zero. The body must be at:
a) Centre of planet b) on the surface of planet c) Infinite distance d) At distance equal to radius of earth
how to think over the problem.
As berkeman says, you need a reference point. I suspect that they want you to use the standard formula for the gravitational PE between two bodies, which has a built-in reference point. What is that formula?sphyics said:how to think over the problem.