<P> Bernoulli 's principle can be derived from the principle of conservation of energy . This states that , in a steady flow , the sum of all forms of energy in a fluid along a streamline is the same at all points on that streamline . This requires that the sum of kinetic energy , potential energy and internal energy remains constant . Thus an increase in the speed of the fluid -- implying an increase in its kinetic energy ( dynamic pressure ) -- occurs with a simultaneous decrease in ( the sum of ) its potential energy ( including the static pressure ) and internal energy . If the fluid is flowing out of a reservoir , the sum of all forms of energy is the same on all streamlines because in a reservoir the energy per unit volume ( the sum of pressure and gravitational potential ρ g h ) is the same everywhere . </P>
<P> Bernoulli 's principle can be derived from the principle of conservation of energy . This states that , in a steady flow , the sum of all forms of energy in a fluid along a streamline is the same at all points on that streamline . This requires that the sum of kinetic energy , potential energy and internal energy remains constant . Thus an increase in the speed of the fluid -- implying an increase in its kinetic energy ( dynamic pressure ) -- occurs with a simultaneous decrease in ( the sum of ) its potential energy ( including the static pressure ) and internal energy . If the fluid is flowing out of a reservoir , the sum of all forms of energy is the same on all streamlines because in a reservoir the energy per unit volume ( the sum of pressure and gravitational potential ρ g h ) is the same everywhere . </P>
bernoullis theorem is based on the conservation of
bernoullis theorem is based on the conservation of
energy
energy