# Conservation of Energy

What is the formula for conservation of energy?

## Answers and Replies

chroot
Staff Emeritus
Science Advisor
Gold Member
dE/dT = constant.

Or, if you prefer, the simpler

E = constant.

- Warren

russ_watters
Mentor
Or: Ein = Eout

chroot
Staff Emeritus
Science Advisor
Gold Member
Oops, I meant dE/dt = 0, not constant. Of course, zero is a constant....

- Warren

nautica
If energy can neither be created nor destroyed - than the logical formula would be that energy before would have to equal energy after.

But you must consider potential, kinetic, friction, heat loss ect...j

Nautica