Here's why:
* Gravitational force is a force: It's an interaction between objects with mass.
* Force is a measurement: It's measured in units like Newtons (N).
* Objects have mass: They are physical entities with properties like size, shape, and composition.
Think of it this way:
* You have a bowling ball (object) and a tennis ball (object).
* The bowling ball has more mass, so it exerts a stronger gravitational force on the tennis ball.
* The gravitational force is the *interaction* between them, not an object itself.
So, while you can *measure* the gravitational force between objects, the force itself isn't an object.