All Questions
3
questions
2
votes
3
answers
224
views
Why gravitational constant $G$ does not have the factor of $4π$?
We know that electrostatic constant $K=\frac{1}{4\pi\epsilon}$.
This $4\pi$ came from the surface area of the surface in which charge is enclosed.
Then, why don't gravitational constant has the factor ...
- 21
0
votes
1
answer
451
views
Find the density of the sphere, $\rho(r)$
If the field vector $\hat{g}$ is independent of the radial distance withing the sphere, find the function describing the density $\rho$ of the sphere, $\rho(r)$.
In spherical coordinates, the ...
- 273
6
votes
1
answer
185
views
Why is the constant in Coulomb's law written in terms of $\pi$ but not the constant in Gravitation?
What is the significance of writing it as $\frac{1}{4\pi \epsilon _0}$? Why not just name the whole thing $\epsilon _0$? And if there is a significance, why not do the same thing for gravitation?
I ...
- 6,355