When i hit a pile with a hammer and a certain kinetic energy is transfered to the pile. How can i calculate how deep it will go in relation to the force applied? It seems to me that the earth must have some sort of resistance and that the force applied must overcome the earthreisitance on the bottom of the pile but also the friction forces that is applied to the rest of the area that is in the ground. I have no idea, but it seems o be something with penetration and solid mechanics. Thx for all help!