Then what will you say about when you hold 20 kg of iron piece for 30 minutes you will definitely suffer pain and strain ...It is true that blood pressure will not increase upto that much but upto some extent it rise..
Brother in this case of pushing or pulling a heavy body which doesn't move has two different aspect In which you can see it.
(1)The first aspect is WORK DONE BY THE STATIC FRICTION.
I.e here is a force of static friction by which there is no displacement so the work done by static friction is...
I just wonder that why the negative deviation comes in graph except for hydrogen and helium gas.I am still thinking for the reason and searching for it.So please help me ...
Actually I didn't understand what the Energy is...In general we say sound , radiation ,chemical bonds ,mass or any thing which is under any field (magnetic or electronic ) is Energy or posses energy...So we relating energy to everything...
Hey we know a general definition about Energy that it is capacity to do work...Or to do work energy is required...But this doesn't make any sense to me..
If someone ask me about Energy I becomes speeches .So Please explain me about the Energy...