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Uploaded byKaren Mae Castillo
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Week-4-Day-1-Pascal_s-principles-and-Hydraulic-systems.pptx

Pascal's Principles and Hydraulic Systems Week 4

Education◦
pre lesson
FORCE PRESSURE IN FLUIDS
GUIDE QUESTIONS
What happens when force is applied over a small area? Pressure increases because the same force acts on a smaller surface
Why do sharp objects cut more easily than blunt objects? Sharp objects have smaller surface areas, producing greater pressure.
LEARNING OBJECTIVES Explain how pressure is transmitted equally in confined fluids based on Pascal’s Principle. Construct and demonstrate a simple hydraulic system using syringes and tubing. Appreciate the importance of hydraulic systems in making work easier and safer in everyday life.
DISCUSSION PROPER
A fluid is a substance that can flow, such as liquids and gases. WHAT IS FLUID? Examples: ⚬ Water ⚬ Oil ⚬ Air
Pressure is the force applied over an area. PRESSURE IN FLUID P = pressure F = force A = area
When pressure is applied to a confined fluid, the pressure is transmitted equally in all directions. PASCAL’S PRINCIPLE
Hydraulic systems use fluid pressure to multiply force. HYDRAULIC SYSTEM • Hydraulic jack • Car brakes • Dentist chair • Excavator Formula for Hydraulic systems
Why do hydraulic brakes make driving safer compared to ordinary manual braking systems? Hydraulic brakes distribute pressure equally through brake fluid, allowing stronger and smoother braking with less effort, improving vehicle control and safety. GUIDE QUESTIONS
Why are liquids preferred over gases in hydraulic systems? Liquids are nearly incompressible, so they transmit pressure more effectively than gases, which compress easily. GUIDE QUESTIONS
guided practice
Connect two syringes using plastic tubing. 1.Fill the tubing with colored water. 2.Push the smaller syringe slowly. 3.Observe the movement of the larger syringe. 4.Repeat using different syringe sizes. PROCEDURE
What happened when the smaller syringe was pushed? The larger syringe moved because pressure was transmitted through the fluid. GUIDE QUESTIONS
Which syringe produced greater output force? The larger syringe produced greater output force because it had a larger area. GUIDE QUESTIONS
What does this demonstrate about Pascal’s Principle? Pressure applied to confined fluid is transmitted equally throughout the fluid. GUIDE QUESTIONS
opportunities and integration • Mathematics: Ratio and area • Engineering and Technology • Automotive servicing
assessment
Answer briefly: 1.State Pascal’s Principle. 2.Give one example of a hydraulic machine. 3.Why does a larger syringe produce greater force?
THANK YOU FOR YOUR ATTENTION