1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Water and elastic collisions

  1. Oct 16, 2013 #1
    Now although this is silly and quite crude (You have been warned), it is a legitimate physics question. I was sitting on the toilet a few days ago and I got some splash back. I started thinking about elastic collisions and how no matter what, nothing is perfectly elastic (correct?). Why would the water come all the way back up to my... you know what and not just my cheeks. If water doesn't observe the behavior of an elastic collision, it must be a mass issue. Maybe the mass of water that gets splashed back up is less than the amount of the impacting mass?
     
  2. jcsd
  3. Oct 16, 2013 #2

    Simon Bridge

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    2016 Award

    You can experiment by dropping different weights (and different shapes) into a bowl of water and see which splashes the highest.

    In terms of energy, even with losses, a small amount of water can be shoved quite high while a lot of water won't.

    The size and shape of the splash tends to depend on the shape of the container, the shape of the object landing in it, and the mass of the object.

    How it falls is also important - you were not in a position to tell if your spoor dropped straight or did a bit of a rotation on the way down I suppose?
     
  4. Oct 16, 2013 #3

    A.T.

    User Avatar
    Science Advisor
    Gold Member

    This might help

    https://www.youtube.com/watch?v=-XNDM4eAn1U
     
  5. Oct 16, 2013 #4

    Simon Bridge

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    2016 Award

    That's great: good find!
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Water and elastic collisions
  1. Elastic collision? (Replies: 3)

  2. Elastic collision (Replies: 3)

  3. Elastic collision (Replies: 2)

Loading...