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: Circular motion

  1. Feb 20, 2009 #1
    1. The problem statement, all variables and given/known data
    A 25 kg child is swinging on a 3.5 m swing. At the bottom of the swing
    the speed of the child is moving at 3.3 m/s. What is the tension on the
    swing’s chain to hold the child?


    2. Relevant equations



    3. The attempt at a solution
    Can you help me i am confused about this.
     
  2. jcsd
  3. Feb 20, 2009 #2

    tiny-tim

    User Avatar
    Science Advisor
    Homework Helper

    Hi tnutty! :smile:

    The child is moving in a circle.

    The forces on the child are the tension in the chain and the force of gravity.

    Use good ol' Newton's second law to relate these forces to the child's acceleration. :smile:
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook