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!

Straw Bridge Project

  1. Aug 19, 2004 #1
    Hi everyone,

    I've got to build a bridge from straws and pins for a year 12 physics class. Our bridges will be tested for strength by hanging weights off the bottom of them, and the strongest bridge wins. If the bridge collapses or the masses touch the ground, we fail.

    Here's some more info:
    - The bridge must cover a 50cm gap
    - If the bridge falls onto the ground, collapses completely or the masses touch the ground, we fail
    - 50 drinking straws are to be used
    - Unlimited amounts of pins (sewing pins, the small ones) are allowed to join the straws together.
    - The masses must be hung from the bottom of the bridge
    - No central supports are allowed (we cannot have straw pillars holding up the bridge)

    Any ideas for the strongest design?

    Thanks! :smile:
     
  2. jcsd
  3. Aug 20, 2004 #2

    HallsofIvy

    User Avatar
    Staff Emeritus
    Science Advisor

    Use lots and lots of triangles!!!
     
  4. Aug 23, 2004 #3
    Nifty!

    Triangles are nifty!

    Unfortunately, 50 straws wasn't enough to do much... It broke.

    But it was really funny! (Well I thought so...)

    :rofl: :biggrin: :tongue2:
     
  5. Aug 23, 2004 #4

    Alkatran

    User Avatar
    Science Advisor
    Homework Helper

    You should've used a lot of triangles in an arc. That way the weight would be transfered onto the ends of the bridge instead of the center. The trick is finding that perfect arc... :rolleyes:
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Straw Bridge Project
  1. Longest Straw (Replies: 2)

  2. Straw Sucktion (Replies: 3)

  3. Paper Bridge Project (Replies: 4)

Loading...