Recent content by JLPhysics

  1. J

    Wave interference equations help

    Homework Statement Does anyone know the equations for these? Or a website that could help? I lost my notes about them and I can't find anything on the internet. I have a worksheet of 15 problems and I only have these three left! :biggrin: A string is attatched to a post at one end...
  2. J

    What is the resultant force direction?

    I found force using Pythagorean, but still trying to find direction
  3. J

    What is the resultant force direction?

    Homework Statement A 33 N force acts on an object at 30 degrees West of South while a 17 N force acts on the same object at 30 degrees North of West. What is the resultant force and direction. Force1= 33 N Force 2= 17 N Homework Equations Force diagram? Cos? The Attempt at a...
  4. J

    Force and Momentum of diving board

    I wanted to post this in Homework but for some reason I can't. Does anyone know the formulas for these problems? An 82 kg man drops from rest on a diving board 3 m above the surface of the water and comes to rest .55 s after reaching the water. What force does the water exert on him? A...
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