Question

how can potential energy be negative explain​

Answer 1

Explanation:

at a separation of a surface of earth gravity wants ful the test mass closer and closer..... so the work done by gravity is negative the gravitational potential energy is negative because us trying to do the opposite of what gravity wants needs positive energy

Answer 2

Explanation:

Gravitational potential energy is negative at the surface of Earth, because work is done by the gravitational field in bringing a mass from infinity i.e work has to be done on a body, if it is taken away from the gravitational field of the earth. Thus, potential energy is negative.