Whether or not the spring is vertical or not, assuming that the spring is ideal, is Fnet always equal to -kx?
Is it incorrect to write the sum of the forces of a vertical spring as Fnet = -kx - mg?
And does hooke's law account for the force of friction on a horizontal spring? If not would the sum of the forces look like this? Fnet = -kx - [itex]\mu[/itex]N
F = -kx