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# Derivation of law of conservation of energy.

Asked by Vaibhav Sehgal(DELHI PUBLIC SCHOOL) , on 12/1/12

This conversation is already closed by Expert

Law of conservation of energy states that energy cant be created and cant be destroyed. but it can only transform from its one form to another.

Potential energy + kinetic energy = constant

mgh + 1/2 mv2 = constant

Posted by Anurag Anand(KENDRIYA VIDYALAYA) on 12/1/12

agree wid above

Posted by aish13(DARBARI LAL D A V MODEL SR.SEC SCHOOL) on 12/1/12

Energy cant be created nor be destroye only it can be transformed..

Posted by Sudhanshu Singh(KENDRIYA VIDYALAYA NO.1) on 12/1/12

Law of conservation of energy (during a free fall )

Let a object be 'm ' , lay on point 'a ' and is lifted to pt 'h ' and stopped at pt 'b '

therefore work done on the body is mgh.

as the body is at rest at 'b '

Kinetic energy at 'b ' = 0

Potential energy at 'b ' =mgh

Therefore total energy at 'b ' =mgh +0

=mgh

the answer is really very long

if u want it just inform me I 'll give.

Posted by Aditi (Ambuja Vidya Niketan, Upperwahi) on 12/1/12

I want the whole derivation of law of conservation of energy.