# What is the force you need to use on the piston?

• campa
In summary, the force needed to push the piston must be greater than the air resistance force, as it must also overcome the resistance of the liquid in the bottle.
campa
If there is an ordinary sprayer (you know with the piston on one side and a bottle which has liquid inside it and is connected to the piston's tube by a tube which goes inside the liquid) and the air resistance on the piston when you try to push it is given (lets say F) what is the force you need to use on the piston?

Should the answer to this be F?

The force should be greater than F. You must use a force F to overcome the air resistance plus a force F1 to accelerate the liquid out of the recipient.

No, the force required to push the piston will be greater than F because you need to overcome both the air resistance and the resistance from the liquid inside the bottle. The exact force needed will depend on factors such as the viscosity of the liquid and the size of the piston, but it will definitely be greater than just the air resistance.

## 1. What is the definition of force?

Force is a physical quantity that describes the push or pull applied to an object in order to change its motion or shape.

## 2. What is the unit of force?

The unit of force is the Newton (N), which is defined as the force required to accelerate a mass of one kilogram at a rate of one meter per second squared.

## 3. How is force related to the piston?

In the context of a piston, force is the energy that is applied to the piston in order to move it and create pressure on the fluid inside the cylinder.

## 4. What factors affect the force needed on the piston?

The force needed on the piston can be affected by several factors such as the mass of the piston, the density of the fluid, and the desired pressure or velocity of the fluid.

## 5. How do you calculate the force needed on the piston?

The force needed on the piston can be calculated using the formula F = P x A, where F is force, P is pressure, and A is the area of the piston. This formula is known as the pressure-force relationship.

• Thermodynamics
Replies
8
Views
483
• Thermodynamics
Replies
5
Views
575
• General Engineering
Replies
6
Views
2K
• Thermodynamics
Replies
0
Views
686
• Mechanical Engineering
Replies
21
Views
1K
• Classical Physics
Replies
3
Views
910
• Classical Physics
Replies
5
Views
543
• Other Physics Topics
Replies
3
Views
1K
• Thermodynamics
Replies
5
Views
960
• Introductory Physics Homework Help
Replies
11
Views
654