- #1
Bashyboy
- 1,421
- 5
Hello,
Whenever I read about potential energy, whether its in the case of gravitational, spring, or electric, I invariably come across the phrase, "...only differences in potential energy matter," and, "...the initial potential energy is arbitrarily chosen to be zero," or phrases to that effect. Why is it that differences in potential energy only matter? Why is our choice of the zero configuration arbitrary?
EDIT: Also, the same goes for electric potential.
Whenever I read about potential energy, whether its in the case of gravitational, spring, or electric, I invariably come across the phrase, "...only differences in potential energy matter," and, "...the initial potential energy is arbitrarily chosen to be zero," or phrases to that effect. Why is it that differences in potential energy only matter? Why is our choice of the zero configuration arbitrary?
EDIT: Also, the same goes for electric potential.