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प्रश्न
What are the energies possessed by a liquid? Write down their equations.
उत्तर
A liquid in motion possesses the following three types of energy:
(i) Kinetic energy: It is the energy possessed by a liquid by virtue of its motion.
K.E. = `1/2"mv"^2`
K.E. per unit mass = `(1/2"mv"^2)/"m" = "v"^2/2`
(ii) Potential energy: It is the energy possessed by a liquid by virtue of its height above the ground level.
P.E. = mgh
P.E. per unit mass = `"mgh"/"m"` = gh
(iii) Pressure energy: It is the energy possessed by a liquid by virtue of its pressure.
Pressure energy per unit mass = `"P"/("m"/"v")`
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