- #1
FallenApple
- 566
- 61
So from what I've heard, the rest mass of a object increases when the object's internal energy increases.
So a clock that is ticking has increased rest mass vs the same clock that is completely still.
But doesn't the clock have moving parts that give kinetic and thermal energy? Then in what sense can we even talk about the clock's rest mass being increased if the ticking clock is not truly at rest?
So a clock that is ticking has increased rest mass vs the same clock that is completely still.
But doesn't the clock have moving parts that give kinetic and thermal energy? Then in what sense can we even talk about the clock's rest mass being increased if the ticking clock is not truly at rest?