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

Force of ball against wall.

  1. Sep 21, 2009 #1
    Hi,
    I am having trouble figuring out how to start this problem, I have a free body diagram, but I am not sure which equation to use to help me solve for this, please help!

    A solid form 42 kg ball of diameter 32 cm is supported against a vertical frictionless wall using a thin 30cm wire of negligible mass, how hard does the ball push against the wall?

    Thank you!
     
  2. jcsd
  3. Sep 21, 2009 #2

    Dale

    Staff: Mentor

    The ball is not accelerating so you can use Newton's first law (sum of the forces = 0).
     
  4. Sep 21, 2009 #3
    yes, but the center of the ball (where the mass is to be assumed) is 16cm away from the wall. so you have a triangle that is a=16 b=43.1 c=46, don't you ave to take that into account?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Force of ball against wall.
Loading...