Pressure is the relationship between force acting acting on an area.
Pressure is defined as the magnitude of the perpendicular force applied over a given surface area.
Pressure, in the physical sciences, the perpendicular force per unit area, or the stress at a point within a confined fluid. In SI units, pressure is measured in pascals; one pascal equals one newton per square meter. Atmospheric pressure is close to 100,000 pascals.
Explain the relationship between pressure and force.
Calculate force given pressure and area.
EXAMPLE 11.2: Calculating Force Exerted by the Air: What Force Does a Pressure Exert?
An astronaut is working outside the International Space Station where the atmospheric pressure is essentially zero. The pressure gauge on her air tank reads 6.90×10^6Pa. What force does the air inside the tank exert on the flat end of the cylindrical tank, a disk 0.150 m in diameter?
Measure the pressure, in Pascals, created by the mass of air above the square meter of the tabletop.
Calculate force given pressure and area.