Anonymous c40ab50aaae0fbfc138f78a57b8018f7 started this discussion 2 months (2008-10-05 08:25:38 UTC) ago:
As a kid I remember seeing "escape from something" scenes in cartoons. Characters would place a chair in front of a door, rendering the door unopenable.
I'm curious if this is a physics leverage thing, such as placing chair at an angle in relation to the door knob (assuming door opens toward the chair) or if it's just cartoon rubbish. I've searched a bit and come up with no mention of the subject.
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Anonymous 2712c2f562a50d4f4724460631794445 replied with this 2 months (2008-10-05 10:01:39 UTC) ago, 2 hours later (#66,425):
If you wedge the chair under the handle of the door, it won't open.
Anonymous c40ab50aaae0fbfc138f78a57b8018f7 (OP) replied with this 2 months (2008-10-05 10:15:24 UTC) ago, 14 minutes later (#66,430):
@66,425So it does have some scientific value to it. My concern is how slippery most chair legs are. Must be a good wedge these characters make.
Anonymous 3662ca8320b91d9327806c674d800a77 replied with this 2 months (2008-10-05 13:30:09 UTC) ago, 3 hours later (#66,457):
If its on carpet its pretty easy
Anonymous a3e18bbcf457a763bf0bf541360296ac replied with this 2 months (2008-10-05 16:53:03 UTC) ago, 3 hours later (#66,490):
You should try it to find out for yourself.
Anonymous 6d761a111cb763dfca1dbbaceb9d9b4d replied with this 2 months (2008-10-05 22:10:27 UTC) ago, 5 hours later (#66,556):
For your average wooden or plastic chair with slim legs, I'm pretty sure a good thump against the door (unless it's very limited in its movement on the hinges) would get rid of the chair.
Anonymous 81c90e65c17e99cdaf76277fd16b76bf replied with this 2 months (2008-10-07 02:57:09 UTC) ago, 1 day later (#67,067):
What's basically happening is that when you push on the door, the force is transferred to the chair. Since the chair is wedged in at an angle, you end up pushing the chair downwards as well as forwards. The larger the downward force on the chair, the greater the friction that will prevent it from sliding. So ideally, you want as much of the force pushing on the door to be transferred directly down into the ground through the chair.
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