Stress
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Pressure
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).
The Amount Of Force
Elastic force is the force exerted by an elastic material when it is stretched or compressed. It is a restoring force that tries to bring the material back to its original shape or size. The amount of elastic force is proportional to the amount of deformation applied to the material.
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.