The First law of Thermodynamics.
It states that "Energy can neither be created nor destroyed, but can be converted from one form to another".
Now applying this law to a machine used in our daily lives, for example, a centrifugal pump, this is what happens:
The motor converts electrical to mechanical energy. The mechanical energy is then converted to fluid energy by the pump. when the water is moved to the tank on the top of the terrace, the fluid energy is converted to potential energy.
what happens after this ? where does all the energy go , if it is not destroyed according to the law ? even if it is lost to the atmosphere, then how exactly ?
Now applying this law to a machine used in our daily lives, for example, a centrifugal pump, this is what happens:
The motor converts electrical to mechanical energy. The mechanical energy is then converted to fluid energy by the pump. when the water is moved to the tank on the top of the terrace, the fluid energy is converted to potential energy.
what happens after this ? where does all the energy go , if it is not destroyed according to the law ? even if it is lost to the atmosphere, then how exactly ?
Replies
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Siddhant Mukherjee@#-Link-Snipped-# The potential energy gained by water is the energy needed for it to flow further. You cannot expect water rushing out through your tap until and unless it has some kinetic energy. So, if you apply Bernoulli's theorem (which is again based on conservation of energy) to the water in tank and the water coming out of your tap you will find that the potential energy loss of tank water has changed into pressure energy and kinetic energy of water at tap. The kinetic energy of tap water is again lost in small deformations made on your bucket's surface. So, energy goes no where it has just changed its form.
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