An inclined plane doesn't change the *direction* of the force of gravity, which always acts straight down. However, it does change the *component* of that force that acts parallel to the plane, which is the force that causes an object to slide down the incline.

Here's a breakdown:

* Force of Gravity: This acts straight down on an object, regardless of the surface it's on.

* Normal Force: This is the force exerted by the inclined plane on the object, perpendicular to the surface.

* Component of Gravity Parallel to the Plane: This is the part of the force of gravity that acts in the direction of the incline, causing the object to slide down.

* Component of Gravity Perpendicular to the Plane: This part of the force of gravity is balanced by the normal force, preventing the object from sinking into the incline.

So, while the direction of the force of gravity itself doesn't change, the inclined plane effectively redirects a part of that force, making it act parallel to the plane. This is what causes the object to slide down the incline.