Pressure and Fluid Static : Part 1

........refers to the study of fluids at rest

• Fluid Dynamic

• Fluid Static

Pressure depends on 2 factors:

• Area

• Volume

• Force

• Time

Define gauge pressure

Pascal law concept states that as below, except:

• When pressure on any portion of a confined liquid is changed, the pressure on every other part of the liquid is also changed by the same amount

• pressure at any point in a body of fluid is the same in every direction, exerting equal force on equal areas.

• liquid transmit pressure equally in all directions

• liquid transmit pressure not equally in all directions

A barber raises his customer’s chair by applying a force of 150N to a hydraulic piston of area 0.01 m2. If the chair is attached to a piston of area 0.1 m2, how massive a customer can the chair raise? Assume the chair itself has a mass of 5 kg. Show your calculation.

A hydraulic system is used to lift a 2000-kg vehicle in an auto garage. If the vehicle sits on a piston of area 0.5 square meter, and a force is applied to a piston of area 0.03 square meters, what is the minimum force that must be applied to lift the vehicle?

State 2 applications of Pascal law