Question

State the law of conservation of energy? Show that when a body falls from a certain height

the total mechanical energy remains conserved.



for 5 mark bro​

Answer 1

Answer:

The law of conservation of energy states that :-

Explanation:

Energy can neither be created nor destroyed , but it can change its form ......

So if a body initially is at rest so it has potential energy but if falled down

the potential energy will be decreasing and kinetic energy will be increasing and when the body comes to the surface and the final velocity of the body is zero then again potential energy will be formed and kinetic energy will be again zero.

Since we know that

Mechanical energy = (kinetic energy + potential energy )

LAW OF CONSERVATION OF ENERGY :- PEf - PEi = KEf + KEi

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