Even if the energy of a system changes, the total change in energy will always be equal to zero.
What is energy?
Energy is a quantitative entity that is needed to perform any reaction or any work of the body and outside the body. Energy is neither created nor destroyed, it is just transformed from one form to another form. In the human body, energy is produced in the form of ATP.
In a closed system, the total energy means the sum of kinetic energy and potential energy will equal zero, by the law of conservation of energy. The equation is written below as the sum of total energy is zero.
E= K + U = 0
Thus, even if a system's energy fluctuates, the overall energy change will always be equal to zero.
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