aeronautik

2. Previous Lesson
 Explain Buoyant force?
An upward force that happened when an object immersed partially
or wholly in liquid.
FB=ρVg
FB=Buoyant Force
ρ=density of fluid
V=volume of fluid displaced
g=gravity
SI Unit = Newton(N)

3.  What is Archimedes’ Principle?
“when an object is wholly or partially immersed in the fluid,
it experienced buoyant force equal to the weight of the
fluid displaced”
 Application
Submarine
Hot air balloon

4. Learning Outcomes
 States Bernoulli's’ Principle
 Explain that a resultant force exist due to a
difference in fluid pressure
 Describe applications of Bernoulli’s Principle
 Solve problem involving Bernoulli’s Principle

5. Learning Activities
 Demonstration to explain the Bernoulli's’ Principle
 Group discussion about application of Bernoulli's’
principle and problem solving followed by
presentation by students.
 Review today lesson
 Review Chapter 3 (Forces and Pressure)

6. Now Showing 18xyz

7.  What can you observe from the video?
 Why the heavy object such as aeroplane can fly??

8. Activity 1

9. Demonstration
Ping-Pong
Ball
Venturi
Tube

10. What is the Bernoulli's’ Principle???
 When the speed of fluid high/increase, the pressure of fluid
low/decreases
 When the speed of fluid low/decrease, the pressure of fluid
high/increase.

11. Lifting Force
Weight
Thrust
Drag

12. How about resultant Force??
 Video 1
 Video 2
Resultant force exists because of difference in fluid pressure
between two surfaces.

13. Application
 Bunsen Burner
 Insecticide spray
 Carburetor

14. Problem Solving
 Solve problems in the worksheet given

15. Learning Outcomes
 Explain Bernoulli's Principle
 When the speed of fluid high/increase, the pressure of fluid
low/decreases
 When the speed of fluid low/decrease, the pressure of fluid
high/increase.
 Explain how a resultant force exist
 Resultant force exists because of difference in fluid pressure
between two surfaces.
 Applications of Bernoulli’s Principle
 Bunsen Burner
 Insecticide spray
 Carburetor

16. Next Lesson
 Chapter 4 ( Heat)
 Understanding Thermal Equilibrium
THANK YOU &
SEE YOU AGAIN NEXT WEEK