Could somebody help me with this? Let’s say I have a screw that is 0.25” dia. I want to screw this screw into the wall. First question: If I turn this screw 2 times around its axis, how far the screw will go into the wall? Second question: If I rotate the screw at 10 RPM what is its linear speed? Please help me with question!!! I can’t figure it out. Let’s pretend that the wall doesn’t resists to the screw at all to go in. I just basically want to know the relationship between linear and rotational speed, when linear speed is parallel to the rotation axis.