Find length of cylinder

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Find length of cylinder

Postby Solar1 » Tue Sep 27, 2005 7:03 pm

Given: Weight (lbs)
Require: Length of cylinder

Example:
Weight of cylinder = 0.35 lbs
Cylinder diameter = 0.236"

What conversion formulas can I use to find the length of the cylinder???
Solar1
 

Re: Find length of cylinder

Postby Guest » Tue Sep 27, 2005 7:46 pm

Solar1 wrote:Given: Weight (lbs)
Require: Length of cylinder

Example:
Weight of cylinder = 0.35 lbs
Cylinder diameter = 0.236"

What conversion formulas can I use to find the length of the cylinder???


1) First, you have to know what the material is, so you can look up its density in a reference book
2) Convert the weight to a volume, using the density M/V = D. In Imperial units, density is probably tabulated as pounds per cubic foot, so you need to know that 1 cu ft = 1728 cu in, to convert volume to cubic inches
3) the volume of a cyclinder is V = (pi/4)*d^2 * h,
you know V, and d, solve for h.

Without specifying the density of the material used, the problem can't be solved. Of course, if you have a rod of the right diameter, you can weigh it, measure it's length, and calculate a length to cut off, L1/W1 = L2/W2, where the "2) is the length and weight of the total rod, and "1" are the length and weight of the piece you want.
Guest
 


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