How can you determine the net force of a bottle

In summary, to determine the net force of a bottle with contents under 2 atm of pressure and a 1 cm opening, a1v1=a2v2 and flowrate=dav do not apply. It is likely that Bernoulli's equation is needed, but this is uncertain. The pressure can be found by using the formula P=F/A, where F is the force and A is the area. If the bottle has two openings facing the same direction, the areas can simply be added together. The outside pressure does not appear to have an effect in this scenario.
  • #1
Gmaximus
25
0
How can you determine the net force of a bottle who's contents are kept under 2 atm of pressure, and it has a 1 cm opening for example?

a1v1=a2v2 doesn't seem to apply, and the flowrate=dav doesn't seem to either. I suspect it is bernoulli's equation, but I am unsure.

I know P=F/A, but how do you find the pressure? is it simply the pressure difference?
 
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  • #2
Also, if the bottle has two openings facing in the same direction, how does that work? Do you add the area of the two holes and use that for area, or is it two separate cases?
 
  • #3
Pressure is defined as "force divided by area" or P= F/A so F= P*A. You are given that the pressure is 2 atmospheres and the fluid is coming out an area of pi cm2 (I am assuming that the "1 cm" hole has radius 1 cm. If it is diameter= 1 cm, then the area is pi/4 cm2).

Yes, if you have two holes of area A1 and A2, then that is the same as 1 hole of area A1+ A2.
 
  • #4
Does the outside pressure matter?
 

1. How do you calculate the net force of a bottle?

To calculate the net force of a bottle, you need to know the mass of the bottle and the acceleration it is experiencing. The net force can then be calculated using the formula F=ma, where F is the net force, m is the mass, and a is the acceleration.

2. What factors affect the net force of a bottle?

The net force of a bottle can be affected by several factors including the mass of the bottle, the acceleration it is experiencing, and any external forces acting on it such as gravity, air resistance, or friction.

3. How can you measure the mass of a bottle?

You can measure the mass of a bottle using a scale. Place the bottle on the scale and record the weight displayed. The weight is a measure of the gravitational force acting on the bottle, which is directly proportional to its mass.

4. How do you determine the acceleration of a bottle?

The acceleration of a bottle can be determined by measuring the change in its velocity over time. This can be done by using a stopwatch to record the time it takes for the bottle to travel a certain distance, and then using the formula a=v/t, where a is the acceleration, v is the change in velocity, and t is the time taken.

5. How can you account for external forces when calculating the net force of a bottle?

To account for external forces, you need to identify and measure each force acting on the bottle. You can then use the formula Fnet=F1+F2+...+Fn, where Fnet is the net force, and F1, F2, etc. are the individual forces acting on the bottle. This will give you the total net force acting on the bottle, taking into account all external forces.

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