The distribution of weight over an area describes the pressure exerted.
Parameters:
(1) unit of mass or weight: pounds, kilograms, newtons
(2) units of area: square inches, square centimeters, square feet, square meters
1 pound = 0.4545 kilograms
1 square inch = 6.45 * 10^(-4) square meters
1 square foot = 0.0929 square meter
1 square cm = 10^(-4) square meter
1 Newton corresponds to 0.101879 kilogram (taking into account Earth's gravity)
1 Pascal (Pa): =1 Newton per square meter
