Law of floatation

1. Mr. Omar Mendez

2. why the ship doesn’t sink?

4.  The law of floatation states that, a floating
body displaces its own weight of the fluid in
which it floats.
 This means if a log of 200kg (2000N) floats
in water displaces 200kg (2000N) of water, if
the same log is placed in other liquid and be
able to float it will displace the same 200kg
of fluid in which it floats.

5. I. The average density of the object should be less than the
density of the fluid in which the object has to float.
Example, a ship is very heavy but it floats because it is hollow
inside it contains air, this causes its average density to be
lower than that of water.
II. The up thrust force of the fluid on the object must
be equal total weight of the object.(law of floatation)
Example, a coin will sink to the bottom when placed on the
surface of water, this is because the up thrust of water on coin
is less than its weight

6. III. The volume of object
submerged must be large so as to
displace large amount of fluid.

8.  State the law of floatation.
 Give application of law of floatation in
everyday life.
 Titanic crashed with an ice berg explain why
it sinked?