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en.wikipedia.org/wiki/Force

In physics, a force is any interaction that, when unopposed, will change the motion of an object. ... It is measured in the SI unit of newtons and represented by the symbol F. ... Pressure, the distribution of many small forces applied over an area of a body, is a simple type of stress that if unbalanced can cause the body to  ...

en.wikipedia.org/wiki/Area_density

The area density of a two-dimensional object is calculated as the mass per unit area. The SI ... over a column: .... The current unit of measure is typically gigabits per square inch. ... bodies falling through air, area density is important because resistance depends on area, and gravitational force is dependent on mass.

www.answers.com/Q/What_is_a_force_measured_over_an_area

The area over which a force acts, is proportional to the pressure. When the area is large then, the pressure acted on it is also large, so the force is greater. Edit.

www.school-for-champions.com/science/pressure.htm

Mar 18, 2006 ... Pressure is the force on an object that is spread over a surface area. ... Although this measurement is straightforward when a solid is pushing ...

www.wired.com/2014/07/how-do-you-estimate-impact-force

Jul 19, 2014 ... How do you calculate the force of a falling piano? ... Clearly they could just measure the mass and the starting height. ... Since work deals with changes in energy over distance it is best to use work-energy when .... But since only a small area of the piano is in contact, the pressure on the roof will be high.

www.khanacademy.org/science/physics/fluids/density-and-pressure/a/pressure-article

Pressure is defined to be the amount of force exerted per area. ... of pressure, you can either exert a large force or exert a force over a small area (or do both). ...... Gauge pressure is the pressure measured relative to atmospheric pressure.

whatis.techtarget.com/definition/pascal-unit-of-pressure-or-stress

One pascal is equivalent to one newton (1 N) of force applied over an area of one meter squared (1 m2). That is, 1 Pa = 1 N · m-2. Reduced to base units in SI, ...

www.khanacademy.org/science/physics/work-and-energy/hookes-law/a/what-is-hookes-law

In mechanics, the force applied per unit area is what is important, this is .... a mount for moving a 1 kg camera smoothly over a vertical distance of 50 mm. ...... Can you still successfully measure force using a spring if Hooke's Law was invalid?

www.boundless.com/physics/textbooks/boundless-physics-textbook/static-equilibrium-elasticity-and-torque-8/elasticity-stress-strain-and-fracture-78/elasticity-stress-and-strain-316-6337

Elasticity is a measure of how much an object deforms (strain) when a given stress (force) is ... Stress is a measure of the force put on the object over the area.