Page 41 - Pressure 10 class
P. 41
An egg sinks in fresh water but floats in salty water.
➢Salty water has greater density than fresh water due to
which liquid upthrust increases in salty water. Since, liquid
pressure is directly proportional to the density of water
keeping g, h and d constant. Due to the high density of
salty water it provides more upthrust then floats and sinks
in fresh water due to its less upthrust.
It is easier to lift a bucket of water until it is inside the level of
water but difficult outside.
➢When a bucket is inside the water, if experiences more
liquid upthrust due to which the bucket can be easily lifted
inside the water. On separating it out from the water, if
looses the upthrust experiences by liquid and hence it
becomes more difficult to lift a bucket outside the water.
July 30, 2020 Taranath Baral/GC Shiba/Suraj Thapaliya 41
