Recent content by Aragorn49

I thank you all for your responses.

By peak force you mean the force that is calculated via F = m x v / t, or is the peak force another form of force?

Impact ... what? Force or Energy? I have a question, about what to calculate if calculating whether an immovable object (a wall for example) will break or not after an impact of another object into it. What should I calculate, the force of the impact or the kinetic energy of the impacting...

I apologize if I posted on the wrong forum, I'm new here. It isn't exactly a homework problem, more like going a bit ahead of the stuff I learn right now. After I finished high school I had a few free years and now I want to get my physics knowledge back in shape cause I want to go studying...

Thank you for the help. But what does My/I mean? What quantities do the letters of that equation represent?

From what I know the equation for calculating flexural stress of a beam with a rectangular cross section is: 3PL/2Bd2 I have two questions about the validity of this equation. I will post a pic I just made to show what I mean: 1st question, Does this equation work both for filled beams...

Thank you very much for your help.

Homework Statement I would like to learn how to calculate whether a laser can burn through a material, or not. For example right now I need to calculate whether a laser from a DVD burner (which supposedly is max. 400 mW strong) can burn through steel. Homework Equations I can imagine...

Thank you very much. It helped me a lot. Now that I know the force I only need to learn how to calculate internal stress in the wall. Btw, one small question, by duration of the impact you mean how long the hand or the car stays touching the wall, right?

Homework Statement Hello and thank you for reading my question. I am attempting to calculate what effect on a wall has an impact (a car impact or as in my theoretical calculations a punch) of an object into it. With effect I mean how strong impacts can a wall a, survive and b, stay...