The document explains buoyancy as the upward force experienced by objects in a liquid due to pressure differences, which increases with depth. It details Archimedes' principle, stating that the buoyant force equals the weight of the fluid displaced by an object. The outcome of whether an object sinks or floats is determined by the relationship between the buoyant force and the object's weight.

1. Buoyancy
By Daniel Chit 11IP

2. Buoyancy
• Upward net force on objects within
a liquid
• Occurs because pressure in a fluid
increases with depth
• Since the bottom is deeper, more
force is pushing up than force on
the bottom pushing down
• Net upward force pushes objects up

4. Archimedes Principle
• The buoyant force on an object is equal to the weight of the fluid displaced by the object
FB = Fw = mg
ρ = M/V
M = ρV
FB = ρVg
It is NOT the object that exerts the buoyant force, it is the fluid that the object displaces that
causes it
FB = ρfluidgVsubmerged

5. • The difference between the buoyant force
and the object’s weight determines
whether an object sinks or floats.
Sink or Float