Question

can a body at rest possess energy explain your answer with an example​

Answer 1

Answer:

Yes, a body at rest can possess energy. We can answer this question in different ways with different examples.

First, as you might have seen in classical mechanics, that when an object is keep at some height above the surface, it gains an energy what we call as gravitation potential energy. We can also say it more correctly as, when an object is taken against it's desire (i.e., against an external force acting on it, from some other source), it will gain potential energy (not only due to gravity). Therefore, a body at rest is possessing potential energy here.

Secondly, if you think of a wooden peice, paper, or a matchstick burned at one end, then the whole peice will burn, dissipating heat and light energy. Now, nothing is transferring energy to it continuously but it is giving off the energy stored in it. What you have done is only initiates the process of burning. If resting body cannot possess energy then the paper or matchstick will never dissipate energy.

Lastly, let's look the most famous equation of Einstein which proves the equivalence of energy and mass, i.e., E=mc^2. This equation tells that the mass and energy are interconvertible, or we could say that mass is the condensed form of energy. Everything around us have some mass (no matter how small it is) and therefore they all must possess energy.

Hence, a resting body can possess energy in different forms (potential energy, thermal energy, etc.).

Explanation: