The amount of force of any object sitting on the earth's surface is it's weight. The mass times it's gravity is weight. There is also the normal force that keeps objects on the earth and balances the weight. Which sets the net force equal to zero. In other words, you don't go through the earth or float away from it.
The amount of force placed on a material is called stress. Stress is the force applied per unit area of the material. It is typically measured in units of force per unit area, such as pascals (Pa) or newtons per square meter (N/m^2).
Stress
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Pressure
The Amount Of Force
Pressure describes the amount of force exerted on a given area.
The force that relates to the amount of force put on a given surface is called pressure. It is calculated by dividing the force applied to an object by the area over which the force is applied.
Pressure!
a pound is a pound/
Pressure!
The amount of a material in a given space is its density. Density is defined as the mass of a substance per unit volume and is a measure of how tightly packed the atoms and molecules of a substance are in a given volume.
That depends on the weight of the load on the other end, the material of which the lever is constructed, and how much of the lever is on each side of the pivot.