Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Energy - Child on a Swing

  1. Apr 23, 2010 #1
    1. Child on a Swing
    This child involves a child swinging on a swing supported by ropes of length 2.5 m. The child's velocity at the bottom of his arc is given as .7 m/s. The goal of the problem is to find the angle between the ropes and the vertical when the child is at his maximum height.


    2. Relevant equations
    1/2mVi^2 = mgh
    divide through by m ---> 1/2Vi^2 = gh


    3. The attempt at a solution
    In solving this problem, I was able to find the child's maximum height using the above equation. This I found to be .025 m, however, beyond this point I am at a loss for what to do.

    Any help would be greatly appreciated!
     
  2. jcsd
  3. Apr 23, 2010 #2
    try to draw a free-body diagram .. and go on from there ..
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook