the figure shown below, four glass vessels contain different amounts of water in it.
Arrange them in the ascending order of pressure exerted at the base of each vessel. Give
justification in support of your answer. [Do Not Draw]
b.) If the mass of water in vessel “D” is 500 gm and area of its base is 0.7m2
, find the pressure
exerted at the base of the vessel, in SI unit?
(Neglecting the mass of glass vessel) Consider acceleration due to gravity = 9.8m/s2
c.) Suppose, the water in the vessel “A” is replaced by honey, will there be any change in
pressure? Give reason.
Answers
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7 Pascal pressure exerted by 500 gm water when area of base is 0.7m²
Explanation
Pressure = Force / Area
mass of water in vessel “D” is 500 gm and area of its base is 0.7m²
500 gm = 0.5 kg
Force by 500 gm mass = 0.5 * g
g = 9.8 m/s²
= 0.5 * 9.8
= 4.9 N
Area = 0.7m²
Pressure = 4.9/0.7 = 7 N/m²
1 N/m² = 1 Pascal
Pressure = 7 Pascal
if water is replaced by honey
as honey density is heavier than water
Hence mass of honey will be more for given volume
Hence pressure will increase
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