Question

what does it mean if energy is conserved throughout a system?

Answer 1

I'm not sure
i think it is the law of conservation of energy
which say
(energy neither be created nor destroyed but it changes from A form to Another )

Answer 2

If energy is conserved throughout a system then the total energy of the system does not change unless energy is transferred into or out of the system.

Answer 3

Everything said so far is correct.

It also means the system has no net work done on it and the system itself also does no net work.

As a theoretical and pragmatic matter in Physics, the conservation of energy is key to many problems.

Answer 4

is it correct to say, mass to energy conversion is actually a violation of conservation of energy principle as you see energy is CREATED from mass

or it still holds good because.. mass is actually a FORM of energy and its basically transformed?

Answer 5

So first year you learn Physics in High School, you learn about the Conservation of Energy.

Second year, you learn about a more expansive version: Conservation of Mass-Energy.

Even so, in many classical problems in Physics, Conservation of Energy is what you need and use.