FORCES IN FLUIDS PASCALS PRINCIPLE WHAT IS PASCALS

FORCES IN FLUIDS PASCAL’S PRINCIPLE

WHAT IS PASCAL’S PRINCIPLE? If you press on a closed bottle of water increases • Water pressure _______ • Increases across _______ fluid, not entire just where you pressed it

WHAT IS PASCAL’S PRINICPLE? Pascal’s Principle: When force is applied to a ________ fluid, the change in confined pressure is transmitted ________ to all equally parts of the fluid.

HOW IS PASCAL’S PRINCIPLE USED IN EVERYDAY LIFE? Pascal’s principle is clearly observed and used in _________ systems hydraulic • Tube filled with _______ fluid • Open ends are capped with ________ pistons • Pressing down on one piston increases pressure throughout the entire liquid • The liquid pushes the second piston up

HOW IS PASCAL’S PRINCIPLE USED IN EVERYDAY LIFE? If both pistons have the same area • One piston provides the force • The other piston is pushed up with the same _______ force 100 N

HOW IS PASCAL’S PRINCIPLE USED IN EVERYDAY LIFE? If one piston is small and one is large • The small piston provides the force • The force is __________ by the multiplied large piston 50 N 200 N

Examples of Hydraulics 1 Automobile lifts are used to work underneath cars.

Examples of Hydraulics 2 Automobile break systems: Cars use hydraulics to stop. Brake fluid flows from the brake pedal and pressure applied travels through the fluid to the brake pads which rub along the disc to stop the car.

Examples of Hydraulics 3 Fire truck ladders

Examples of Hydraulics 4 Construction machinery • • Crane Backhoe Dump truck Forklift

Examples of Hydraulics 5 Airplane wheels

Examples of Hydraulics 6 Adjustable chairs

Quiz Questions Table of Contents Question 1 Question 2 Question 3 Question 4 Question 5

Quiz Question # 1 Pascal’s principle states that when force is applied to a confined fluid, the change in pressure a. is transmitted only where the pressure is applied. b. is transmitted equally to all parts of the fluid. c. is transmitted to any weakness in the fluid’s container. d. is transmitted in the direction of the buoyant force.

Quiz Question # 2 Hydraulic systems are used to ______ the amount of force applied to the first piston. a. increase b. decrease c. maintain d. stop Quiz Main

Quiz Question # 3 Why can a light push applied to the lever of a hydraulic barbershop chair can lift a person in the chair? a. The force moves through a liquid to lift the chair. b. The amount of force is multiplied due to area of the pistons. c. Neither a or b are correct. d. Both a and b are correct.

Quiz Question # 4 In a hydraulic system, if the area of both pistons are equal, the amount of force transferred is a. larger. b. smaller. c. equal. d. non-existent.

Quiz Question # 5 In order for a hydraulic system to multiply force, a. Both pistons must be small b. Both pistons must be large c. Both pistons must have the same amount of area d. One piston must be large and one small

Quiz Main