- #1
Silviu
- 624
- 11
Hello! I was wondering if the electric and gravitational fields are the same for a moving and a stationary object. The electric field (assume it is created by a stationary charge) is ##E = \frac{q}{\epsilon_0 4 \pi r^2}##, for a stationary observer, but it is higher for a moving one, as the r is getting smaller, while all the other are constant. Is this correct? For gravitational field, the formula would be ##G\frac{M}{r^2}##. The same reasoning can be applied here, only that in this case the mass M seems to increase. Are my reasoning correct? And if so, why does the electric and gravitational field behave differently, beside the math involved? Thank you!