Embedded Files
Big Idea
Big Idea
Pressure is the relationship between force acting acting on an area.
Pressure is the relationship between force acting acting on an area.
Define pressure.
Define pressure.
Pressure is defined as the magnitude of the perpendicular force applied over a given surface 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.
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.
Explain the relationship between pressure and force.
Demo: Bed of Nails
Demo: Bed of Nails
Calculate force given pressure and area.
Calculate force given pressure and area.
EXAMPLE 11.2: Calculating Force Exerted by the Air: What Force Does a Pressure Exert?
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?
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?
Try this
Try this
Measure the pressure, in Pascals, created by the mass of air above the square meter of the tabletop.
Measure the pressure, in Pascals, created by the mass of air above the square meter of the tabletop.
Calculate force given pressure and area.
Calculate force given pressure and area.
- 1 atm
- 101325 Pa or 101.3 kPa
≈ 1 x 10^5 Pa
- 760 mmHg or 760 Torr
- 14.695 psi
≈ 14.7 psi
- 1.01325 Bar
≈ 1 Bar
Google Sites
Report abuse