This question is a bit tricky because it's worded in a way that might lead to confusion. Here's a breakdown to clarify:

The forces acting on an object depend on the forces exerted BY other objects.

Here's why:

* Forces are interactions: Forces are not something an object "has" on its own. They arise from interactions between objects.

* Newton's Third Law: This law states that for every action, there is an equal and opposite reaction. This means that if object A exerts a force on object B, then object B simultaneously exerts an equal and opposite force on object A.

Examples:

* Gravity: The Earth exerts a gravitational force on you, pulling you towards its center. This force depends on the mass of the Earth and your mass.

* Pushing a box: When you push a box, you exert a force on it. The box exerts an equal and opposite force back on you.

* Friction: Friction is a force that opposes motion between surfaces in contact. It depends on the nature of the surfaces and the force pressing them together.

To summarize: The forces acting on an object are determined by the forces exerted *by other objects* on that object.