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Oranges and drywall 
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#1
Oct1813, 04:02 PM

P: 3

OK, PF, I have an argument to settle and I need some expert advice.
A friend of mine claims that it is possible to throw an orange through a 1/2" sheet of drywall (gypsum board); several other friends refute his claim. I would like to do the math to prove/disprove the theory, but my line of work doesn't give me a lot of practice with the physics of such dynamic elements. Question to the forum: how would I go about setting up an equation solve for this problem. Thanks in advance! 


#2
Oct1813, 04:21 PM

P: 886

Why don't you just give it a try?



#3
Oct1813, 04:23 PM

P: 3




#4
Oct1813, 04:25 PM

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P: 40,730

Oranges and drywall



#5
Oct1813, 05:50 PM

Engineering
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#6
Oct2013, 08:33 AM

P: 3,109

Perhaps google for the impact properties of drywall. If you can't find them you will have to do the experiment.



#8
Oct2013, 10:58 PM

P: 58




#9
Oct2013, 11:22 PM

P: 1,074

The question becomes one of whether the orange will fly apart from the acceleration or air turbulence before it gets enough momentum to break the drywall.
http://www.gypsum.org/wp/wpcontent/.../GA23510.pdf talks about drywall strength. I'd have to learn more about the methods used for measurement of Effective Modulus of Rupture (MOR) per ASTM C 1396 to understand how to apply the numbers. Are you considering a freestanding 4x8 sheet? or one nailed to 17" studs? 


#10
Oct2113, 08:49 AM

P: 2,179

Only somewhat related, but I love this movie of a cannon firing a 2x4 through a brick wall.
http://www.youtube.com/watch?v=Pot7UI5SLb8 


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