What is the relationship of the cross sectional area of a surface to the pressure it exerts?

For a given amount of force, the smaller the area of contact the greater the pressure exerted. This explains why it would be easier for a sharp pin to penetrate a piece of cardboard than a blunt one when the same force is used. A solid resting on a horizontal surface exerts a normal contact force equals to its weight.

What is the relationship between pressure and surface area?

The pressure exerted on a surface by an object increases as the weight of the object increases or the surface area of contact decreases. Alternatively the pressure exerted decreases as the weight of the object decreases or the surface area of contact increases.

What is the relationship between a small cross sectional area and a large cross sectional area and the pressure?

Why does a decrease in cross-sectional area increase the pressure. When the cross section of the flow tube decreases, the flow speed increases, and therefore the pressure decreases.

What is the relationship between pressure and force?

The pressure is a concept which rises when force is applied to a unit area; in simple words, the pressure is the force per unit area. According to the formula P = F/A, the pressure is directly proportional to the force, i.e. if force is more, the pressure will also be more.

What is the relation between area and pressure explain with an example?

As the definition says, if A=1,P=F. This means that pressure is equal to the magnitude of the normal force acting on a unit surface area, in contact with the force. It is a scalar quantity and its SI unit is pascal(Pa). 1Pa is equal to the pressure exerted on a surface area of 1m2 due to a force of 1N.

What is the relationship between pressure and the area of contact give an example?

We can see by physical example how the pressure exerted by the body depends on the area. When we walk in high heels the area of the contact of the heels with the surface is very small and hence the pressure exerted will be very high so is the pressure exerted on the body.

What does pressure mean in physics?

perpendicular force per unit area
pressure, in the physical sciences, the perpendicular force per unit area, or the stress at a point within a confined fluid. In SI units, pressure is measured in pascals; one pascal equals one newton per square metre. Atmospheric pressure is close to 100,000 pascals.

What is the relationship between velocity and cross sectional area?

Speed increases when cross-sectional area decreases, and speed decreases when cross-sectional area increases. This is a consequence of the continuity equation. If the flow Q is held constant, when the area A decreases, the velocity v must increase proportionally.

What is the relationship between the units pascal and newton?

The pascal (pronounced pass-KAL and abbreviated Pa) is the unit of pressure or stress in the International System of Units (SI). It is named after the scientist Blaise Pascal. One pascal is equivalent to one newton (1 N) of force applied over an area of one meter squared (1 m2). That is, 1 Pa = 1 N · m-2.