Question

Is energy always conserved..?? Is there any proof for it..??

Answer 1

It depends on many factors. For example, if it is a closed or open system. Another example can be if we are neglecting gravity, surface friction, and air resistance.

If it is open system that means external changes can affect the energy and the energy cannot be conserved.

Imagine Space, if you touch an object with lets say 10 m/s velocity, it will move at that velocity forever which shows energy is conserved. Another example is when a star dies, there is a massive explosion which causes all the elements and substances of the star to scatter in the universe. Later, this energy will form other planets and stars. This suggests that energy in universe is conserved when the system is closed.

Answer 2

I hope this answered your question.

Answer 3

In my opinion, you have to google this question because the topic of conservation of energy is very broad and controversial. There are professors and physicists which can provide you with more accurate information.

Answer 4

As long as there's no violation to it, you'll have to accept it.

And so long no theory ( and experiment) has been enough con-vincible to be its drawback and prove it incorrect ( or correct).