bernoulli"s magic
DESCRIPTION
aeronautikTRANSCRIPT
Previous LessonExplain Buoyant force? An upward force that happened when an object immersed
partially or wholly in liquid.
FB=ρVgFB=Buoyant Force
ρ=density of fluid
V=volume of fluid displaced
g=gravity
SI Unit = Newton(N)
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”
ApplicationSubmarine Hot air balloon
Learning OutcomesStates Bernoulli's’ PrincipleExplain that a resultant force exist due to a
difference in fluid pressureDescribe applications of Bernoulli’s PrincipleSolve problem involving Bernoulli’s Principle
Learning ActivitiesDemonstration to explain the Bernoulli's’
PrincipleGroup discussion about application of
Bernoulli's’ principle and problem solving followed by presentation by students.
Review today lessonReview Chapter 3 (Forces and Pressure)
Now Showing 18xyz
What can you observe from the video?Why the heavy object such as aeroplane can
fly??
Activity 1
DemonstrationPing-Pong Ball
Venturi Tube
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.
Lifting Force
Weight
Thrust
Drag
How about resultant Force??
Video 1Video 2
Resultant force exists because of difference in fluid pressure between two surfaces.
ApplicationBunsen BurnerInsecticide sprayCarburetor
Problem SolvingSolve problems in the worksheet given
Learning OutcomesExplain 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
Next LessonChapter 4 ( Heat)Understanding Thermal Equilibrium
THANK YOU &SEE YOU AGAIN NEXT WEEK