Do they have any thing to do with each other?
2007-02-09 10:03:57 · 5 answers · asked by mackstarted 2 in Science & Mathematics ➔ Physics
So..... if you combind them like acceleration + pressure to an object dre they common there?
2007-02-09 10:14:16 · update #1
They are related by force. Pressure is force per unit area. In SI 1 Pa of pressure is 1 N / 1 m^2. Acceleration is of course force per unit mass. F = m a so a = F/m.
I can think of no application where these two terms are used together. Whenever we talk about acceleration, we talk about force. Pressure usually is talked about only when we are dealing with fluids or gases.
2007-02-09 10:20:03 · answer #1 · answered by msi_cord 7 · 0⤊ 0⤋
Pressure is just the force on a surface per unit area. But just because there is pressure on a surface does not mean there will be any acceleration. For example, there is 14.7 psi air pressure at sea level, but that pressure does not ordinarily cause acceleration - it just pushes on all objects equally in all directions. Instead, there must be a NET force - the sum of the force on the object must be nonzero. That can be accomplished by a pressure difference.
For example, if one side of a piston with area 0.1 m^2 has a pressure of 100 N/m^2, and the other side is a vacuum (0 N/m^2), there will be a net force of 10 N on that piston. (Force = Pressure x Area). If the piston has a mass of 1 kg, for example, there will be an initial acceleration of 10 m/s^2 (acceleration = Force / mass).
By contrast, if there is the same pressure on each side of the piston, there will be no net force, so no acceleration.
2007-02-09 11:51:15 · answer #2 · answered by volume_watcher 3 · 0⤊ 0⤋
Acceleration is how fast things change their velocity. Pressure is the force that is exerted on a given area. The only link is that forces produce accelerations (F=ma.)
You are not usually using the concept of acceleration at the same time as the concept of pressure. For example, the air pressure in a balloon does not produce an acceleration of the balloon (other than increasing the pressure causes the balloon to expand.)
2007-02-09 10:11:44 · answer #3 · answered by Rob S 3 · 0⤊ 0⤋
Pressure is related to force, ie in pounds/in^2. So Pressure * Area = Force and Force = Acceleration * Mass
Does this help?
2007-02-09 10:09:09 · answer #4 · answered by rscanner 6 · 0⤊ 0⤋
Pressure is a distributed force. There are other types of distributed forces such as gravity or magnetism. When any unbalanced force acts on a body, it accelerates, that is, its velocity changes.
2007-02-13 10:03:25 · answer #5 · answered by Bob V. 1 · 0⤊ 0⤋