Forgive me if this question is too simple, I'm a complete outsider to the field of engineering and mechanical engineering.
A friend of mine had said that the thread angle of a screw modulates how easily a screw is able to penetrate a certain material. I think he was talking of mechanical advantage in screws, and had said that it's essentially like an inclined plane or an axe, it'll go through easier/with less work if the angle is decreased.
I just wanted to verify if this is true, and if the length of the (flank?) or just triangle if we think of it in simple terms, also needs to increase, in the same way an inclined plane's length needs to increase in order to modulate the angle and also reach the same height, and that will allow a person to go up the plane with less effort.
I made a GIF to (hopefully) more clearly state what I want to understand:
Here I am scaling the Z-axis. Would this scaling (making it thinner) result in a horizontal force that allows the screw to penetrate a material with less work? Would the major diameter also have to change to bring it up to the same length/height?
In other words can this angle here:
Be thought of in the same way in relation to the angle of an incline plane? (the lower the angle is, and the longer it is, the less energy to climb up it? Similar to an axe? (A sharper, longer axe will go in with less energy), here I'm mapping the crest of a thread to the crest of an axe.