1. BY : NURUL SYAZWANI IZZATI
BT KHAIRI (409)

2. “ The buoyant force acting on an
object completely submerged
in water equals the weight of
the displaced water “

4. The property of the fluids to apply buoyant
force
UPTHRUST OR BOUYANCY
FORCE
the force acting upward to
reduce the actual weight of
the objectwhen it is under
water

5.  The volume of the
body immersed i.e.
volume of the fluid
displaced ,or
 density of the fluid

6. EUREKA CAN
STONE
SPRING
BALANCE
BEAKER

7.  Buoyant Force = Weight of fluid
displaced
= mg
= ρVg
(note : F = ma)
(note : ρ = m∕V )
Thus FB= ρ V g
Where ……
FB= Buoyant Force or Upthrust
ρ = Density of fluid
V = Volume of fluid displaced or
the volume of the object that
immersed in the fluid.

8.  Buoyant force = weight ⇒ the
object floats and stationary
 Buoyant force > weight ⇒ the
object moves up
 Buoyant force < weight ⇒ the
object moves down

9. A floating object
displaces its own
weight of fluid which
it floats.

10. HOT AIR
BALLOON
SUBMARINE
SHIPS
FISHES