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प्रश्न
A vessel contains water up to a height of 1.5 m. Taking the density of water 103 kg m-3, acceleration due to gravity 9.8 m s-2 and area of base of vessel 100 cm2, calculate: (a) the pressure and (b) the thrust at the base of vessel.
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उत्तर
Given height , h = 1.5 m
Density of water , ρ = 103 kgm-3
Acceleration due to gravity , g = 9.8 m/s2
Area of base of the vessel , a = 100 cm2 = `100 xx 10^-4 "m"^2`
(a) Pressure , P = hρg
or , P = `1.5 xx 10^3 xx 9.8`
or , P = `1.47 xx 10^4 "Nm"^-2`
(b) Thrust = Pressure × area
or , thrust = `1.47 × 10^4 × 100 × 10^-4` N
or , thrust = 147 N
संबंधित प्रश्न
Name the S.I. unit of density. How is it related to g Cm-3?
What is meant by pressure? State its S.I. unit.
The pressure inside a liquid of density p at a depth h is :
Describe an experiment to show that a body immersed in a liquid appears lighter than it really is.
A body experiences an upthrust F1 in river water and F2 in sea water when dipped up to the same level. Which is more, F1 or F2? Give reason.
Prove that the loss in weight of a body when immersed wholly or partially in a liquid is equal to the buoyant force (or upthrust) and this loss is because of the difference in pressure exerted by liquid on the upper and lower surfaces of the submerged part of body.
A body will experience minimum upthrust when it is completely immersed in :
A body weighs 450 gf in air and 310 gf when completely immersed in water. Find
(i) The volume of the body,
(ii) The loss in weight of the body, and
(iii) The upthrust on the body.
State the assumption made in part (i).
Select the correct option:
The phenomenon due to which a solid experiences upward force when immersed in water is called:
A body will sink if the weight of the body is greater than the buoyant force.
