Page 42 - Pressure 10 class
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The blood pressure is more at the feet than at the head.
➢ Blood is fluid connective tissue which is found circulating
inside the cardio-vascular throughout our body. The height
or depth of blood is found to be minimum in our head but
it is found to be maximum at the feet. Greater height of
blood in cardiovascular system in feet causes to increase
the liquid pressure (blood pressure) at the feet than at the
head. Since, liquid pressure is directly proportional to the
height or depth of liquid keeping acceleration due to
gravity and density of water are constant.
An iron nail sinks in water but a ship made up of iron floats.
➢ Iron nails cover less area so that it experiences less
upthrust in water and it can’t displace the water equal to its
own weight and sinks. But ship made up of iron covers
more area so that it experiences more upthrust as a result it
can float in water.
July 30, 2020 Taranath Baral/GC Shiba/Suraj Thapaliya 42
