finding force using volume and psi HELP!!!

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kydavies
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Fri Apr 23, 2010 11:13 pm

all you need to know is that potato is gone!
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jimmy101
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Fri Apr 23, 2010 11:59 pm

1.5 diameter barrel potato mass=.25kg
The mass seems way too high. I would WAG the spud at less than 0.10Kg and perhaps as little as 0.05Kg depending on if you use the full spud or a half spud.

Changing the mass will change the muzzle velocity estimate by the square root of the two masses. So if the spud is actually 0.1Kg instead of 0.25Kg then the expected muzzle velocity is scaled by SQRT(0.25/0.10)=1.6
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