Calculating Force of Expanding Compressed Gas

In summary, the conversation discusses the possibility of calculating the force in Newtons when a compressed gas expands. It is mentioned that pressure is force per unit area and that the volume expansion is twice the original volume. However, without more specific details, it is difficult to determine the force on an expanding gas container. The OP has provided more information in another forum post.
  • #1
Quaboble
7
0
Hello, is it possible to figure out how much force in Newtons is created when a compressed gas expands?
 
Last edited:
Physics news on Phys.org
  • #2
Pressure is force per unit area...What is the pressure drop and the volume expansion?
 
  • #3
Quaboble said:
Hello, is it possible to figure out how much force in Newtons is created when a compressed gas expands?

Without more details, no.
 
Last edited:
  • #4
Pressure drop? Not sure what that is :( Volume expansion is twice the original volume
 
  • #5
Shooting star said:
Without more details, no.

More or less what he said.

When a gas is contained by some closed surface, the surface doesn't move because there is a force balance between the inside and ouside of the container. If you want, you could calculae the hydrostatic force exerted by the gas by integrating the pressure over the surface (which usually just amounts to multiplying the pressure by the area). But without a lot more details, it isn't clear how one would calculate the force on an expanding gas container. If it's a simple system like a piston, then the problem is fairly easy. For more complex systems...well, you'd have to give me a few more specific details before I could solve the problem.
 
  • #7
Please don't multi-post.
 

1. How is the force of expanding compressed gas calculated?

The force of expanding compressed gas can be calculated using the ideal gas law, which states that pressure (P) multiplied by volume (V) equals the number of moles of gas (n) multiplied by the universal gas constant (R) and the temperature (T). The formula for this is F = P * V = n * R * T.

2. What factors affect the force of expanding compressed gas?

The force of expanding compressed gas is affected by the initial pressure and volume of the gas, as well as the temperature and the number of moles of gas present. Other factors such as the type of gas and its compressibility can also have an impact on the force.

3. How does the temperature of the gas affect the force?

The temperature of the gas directly affects the force of expanding compressed gas because it is a component of the ideal gas law. As the temperature increases, the force also increases, and vice versa. This is because an increase in temperature causes the gas molecules to move faster and collide with the walls of the container more frequently, resulting in a higher force.

4. Can the force of expanding compressed gas be negative?

Yes, the force of expanding compressed gas can be negative. This occurs when the gas is expanding and doing work on the surroundings, rather than the surroundings doing work on the gas. In this case, the force acts in the opposite direction of the gas's expansion.

5. How is the force of expanding compressed gas affected by changing the volume?

The force of expanding compressed gas is directly proportional to the change in volume. This means that as the volume increases, the force also increases, and as the volume decreases, the force decreases. This relationship is described by Boyle's Law, which states that at a constant temperature, the pressure and volume of a gas are inversely related.

Similar threads

Replies
3
Views
591
Replies
8
Views
1K
Replies
5
Views
1K
  • Thermodynamics
Replies
20
Views
1K
  • Other Physics Topics
Replies
3
Views
1K
  • Thermodynamics
Replies
6
Views
1K
Replies
7
Views
960
  • Mechanical Engineering
Replies
6
Views
1K
Replies
17
Views
889
Back
Top