Because Nature is such a miser when concern energy is concerned. High potential energy is very unstable, like when an electron is excited to a higher energy level, it as soon as possible bounces back to a state of lower energy. We do no really know why Nature acts this way, that is why the equation that describes this behavior of Nature is called a theorem and not a theory. The Work-Energy theorem says that the change in kinetic energy = negative of change in potential energy. so that when the potential energy is positive. The natural tendency of things is to go to a place where its potential is lower. In the equation, this means that the object would go accelerate towards that place of lower potential.
2007-05-27 02:01:01
·
answer #1
·
answered by pecier 3
·
0⤊
0⤋
Nature acts to minimise the free energy of a system and what you wrote is one of the ways of reducing the free energy of the body. A body falling in free fall towards a gravitational field is an example.
2007-05-27 07:27:41
·
answer #2
·
answered by Swamy 7
·
0⤊
0⤋
Any system has a certain amount of energy
However, if a system has more energy, it is more unstable
As a general rule in nature, systems try to become more stable
To attain stability, the body (our system in the discussion) tends towards lower energy
2007-05-27 08:17:32
·
answer #3
·
answered by Anonymous
·
0⤊
0⤋
As energy is conserved, its potential energy will always be converted to kinetic energy (only in a conservative field).
In the presence of non conservative fields or forces(Eg: Friction), its P.E. can be converted to dissipative forces like heat. Therefore , as its P.E. decreases its kinetic energy increases,thereby increasing its velocity.
P.S.- K.E. =1/2*m*v^2 where m is its mass and v is its speed
2007-05-27 07:25:05
·
answer #4
·
answered by avinash a 1
·
0⤊
0⤋