13.2 Pressure in Fluids

Front

What is Pascal's principle?

Back

Pascal's principle states that when pressure is applied to a confined fluid, the pressure change occurs throughout the entire fluid without loss.

Front

What is the unit of pressure?

Back

Pressure is measured in Pascals (Pa).

Front

What is lift in the context of fluid pressure?

Back

Lift is the upward force created by the pressure difference between the top and bottom surfaces of a wing.

Front

How does the area of contact affect pressure?

Back

Pressure is inversely proportional to the area of contact; as the area decreases, pressure increases.

Front

What happens to pressure when a horse stands on two legs instead of four?

Back

The pressure exerted on the ground will double because the same weight is distributed over a smaller area.

Front

What is the formula for calculating pressure?

Back

Pressure (p) = Force (f) ÷ Area (a).

Front

What is the relationship between force, area, and pressure?

Back

Pressure is the amount of force applied per unit area.

Front

What is the effect of depth on fluid pressure?

Back

Fluid pressure increases with depth due to the weight of the fluid above.

Front

What is the difference between lift and drag?

Back

Lift is the force that acts perpendicular to the flow of fluid, while drag is the force that acts parallel to the flow, opposing motion.

Front

How do hydraulic systems utilize Pascal's principle?

Back

Hydraulic systems use Pascal's principle to multiply force by transmitting pressure through a fluid in a confined space.