1. Not finding help here? Sign up for a free 30min 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!

Is it a good idea to fire a shotgun against a tree?

  1. Apr 5, 2015 #1
    1. The problem statement, all variables and given/known data

    When Danny was 13, he went deer hunting with his grandfather. He decided that he didn't like the "kick" of the gun, so he pressed himself against a tree before firing a 12-gauge (3.5kg) loaded with a deer slug (0.22kg). Evaluate this idea.

    It was a big mistake.
    It really won't matter.
    It was a good idea.

    Based on your knowledge of momentum conservation, explain the reasoning for your answer.

    2. Relevant equations
    Conservation of Momentum & Energy
    ΔEsys=Wsurr+Q
    3. The attempt at a solution

    I believe it would be a good idea because the kick would transfer from the gun to your shoulder, and then into the wall due to the conservation of momentum and energy.
     
    Last edited by a moderator: Apr 6, 2015
  2. jcsd
  3. Apr 5, 2015 #2

    jedishrfu

    Staff: Mentor

    Okay consider hanging a piece of wood in front of you from two strings and hitting it with your fist. Does it hurt more or less than if the wood is hanging and touching a wall when you hit it?
     
  4. Apr 5, 2015 #3
    It would hurt more if it was touching a wall, because the wall will have energy pushing back?
     
  5. Apr 5, 2015 #4

    jedishrfu

    Staff: Mentor

    So what would happen to your shoulder?
     
  6. Apr 5, 2015 #5
    It would move more, resulting in a big mistake. I really liked the example you used, made it very easy to think through the concept, thank you.
     
  7. Apr 5, 2015 #6

    jedishrfu

    Staff: Mentor

    No I was thinking more that it could seriously damage your shoulder.

    It would probably be a more accurate shot though as your shoulder wouldn't move as much keeping the shot straight and accurate.
     
  8. Apr 7, 2015 #7
    You shouldn't have to explain this scientifically to know it's a bad idea..
     
  9. Apr 7, 2015 #8

    phinds

    User Avatar
    Gold Member
    2016 Award

    No, it would move LESS, resulting in a bad idea. When your shoulder is not against a tree it can absorb some of the recoil by moving backwards. When it's against a tree it can't move so all the recoil goes into your shoulder.
     
  10. Apr 9, 2015 #9

    mfb

    User Avatar
    2016 Award

    Staff: Mentor

    Can you press the shotgun against the tree?
    Or get something hard connecting the shotgun with the tree to transfer momentum via this object instead of the shoulder?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Is it a good idea to fire a shotgun against a tree?
  1. A tree grows (Replies: 6)

Loading...