You're thinking about this backwards! A heavier object will always exert more pressure on the ground than a lighter object, given the same surface area. Here's why:

* Pressure = Force / Area

* Force is the weight of the object, which is directly proportional to its mass. A heavier object has more mass, and therefore more weight.

* Area is the surface area of the object in contact with the ground.

Example:

Imagine a brick and a feather. The brick is much heavier than the feather. If both are placed on a flat surface, the brick will exert more pressure because it has more weight (force) pushing down on the same area.

Here's a key point:

Pressure can be increased by:

* Increasing the force (weight): A heavier object exerts more force.

* Decreasing the area: Imagine standing on one foot versus both feet. You're applying the same force, but the pressure is higher when you stand on one foot because the area is smaller.

So, a lighter object can only exert more pressure if it has a significantly smaller surface area in contact with the ground.