Here's why:
* Weight vs. Mass: We often use "weight" and "force of gravity" interchangeably. However, they are not the same thing.
* Weight is the force exerted on an object due to gravity.
* Mass is the amount of matter in an object.
* On Earth's Surface: When an object is on the surface of the Earth, its weight is the force of gravity acting on it.
Therefore, since the man's weight is 500N, the force of gravity acting on him is also 500N.
