Potential energy of a body in the gravitational field of planet is zero. The body must be
A. at centre of planet.
B. on the surface of planet.
C. at infinity.
D. at distance equal to radius of Earth.
Answer:C
Potential energy of a body in the gravitational field of planet is zero. The body must be
A. at centre of planet. B. on the surface of planet. C. at infinity. D. at distance equal to radius of Earth.