# Pressure and force relationship

### Difference Between Force and Pressure (with Comparison Chart) - Key Differences Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit The pressure, as a scalar, has no direction. The force given by the previous relationship to the quantity has a direction, but the pressure does not . Yes There's a relationship between force and pressure. Pressure is defined as force per unit area. Mathematically it can be stared as PRESSURE = FORCE. In this lesson, learn about the relationship between force, area, and pressure, and how changes in pressure can have some serious consequences!.

Pressure equals Weight divided by Area Example with shoes A good example of how a force on small area can result in a very high pressure is seen in women's shoes with high spiked heels. These types of shoes can cause damage to some floors due to the very high pressure on the floor at the heel. An average shoe distributes the weight of the person over 20 square inches. Since a spike-heel is only 0.

## Pressure is Force per Unit Area

In some cases, that is sufficient to damage the floor. Fluid weight If you put a liquid in a container, the weight of that liquid would be pressing on the bottom of the container similar to that of the weight of a solid object.

• Difference Between Force and Pressure

The pressure on the bottom of the container would be the same as if the weight was from a solid: The only difference is that pressure in a fluid goes in all directions. So the pressure on the sides at the bottom would be the same. Gases and liquids exhibit pressure due to their weight at every point in the fluid.

## Pressure and Force Relationship and Its Application

Summary Pressure is the force on an object that is spread over a surface area. Pressure can be measured for a solid is pushing on a solid, but the case of a solid pushing on a liquid or gas requires that the fluid be confined in a container. Another example is a knife. If we try to cut a fruit with the flat side, the force is distributed over a large area, and it will not cut. But if we use the edge, it will cut smoothly. The reason is that the flat side has a greater surface area less pressureand so it does not cut the fruit.

When we take the thin side, the surface area is reduced, and so it cuts the fruit easily and quickly. This is one example of a practical application of pressure. For gases, pressure is sometimes measured not as an absolute pressure, but relative to atmospheric pressure ; such measurements are called gauge pressure. Where space is limited, such as on pressure gaugesname platesgraph labels, and table headings, the use of a modifier in parentheses, such as "kPa gauge " or "kPa absolute ", is permitted.

### Pressure and Force Relationship and Its Application - Drilling Formulas and Drilling Calculations

However, whenever equation-of-state properties, such as densities or changes in densities, must be calculated, pressures must be expressed in terms of their absolute values. Focusing on gauge values, one might erroneously conclude the first sample had twice the density of the second one.

Scalar nature[ edit ] In a static gasthe gas as a whole does not appear to move. The individual molecules of the gas, however, are in constant random motion.