THE CLOCK OF THE LONG NOw - Long Now Foundation
THE CLOCK OF THE LONG NOw - Long Now Foundation
THE CLOCK OF THE LONG NOw - Long Now Foundation
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Torsionpedulum4.nb 2<br />
TorsionSpringConstant h b 3 ShearModulus 3L<br />
0.0803472 inch pound<br />
accounting forlongitudinal shear (I think this may be wong. SHould depned of angle)<br />
ShearCorrection <br />
0.0226642<br />
ElasticModulus h 4<br />
<br />
ShearModulus 120 b 2 L 2<br />
TorsionSpringConstant h b 3 ShearModulus 1 ShearCorrection<br />
0.0821682 inch pound<br />
According to Mark's, (but I think this is wrong)<br />
TorsionSpringConstant b 3 h 3 ShearModulus 3.6 L b 2 h 2<br />
0.0669292 inch pound<br />
According to Roak's 6th edition<br />
a h 2;<br />
z b 2;<br />
TorsionSpringConstantRoak <br />
az3 16<br />
3.36<br />
3 z<br />
1 <br />
a<br />
z 4<br />
<br />
12 a 4<br />
0.0793348 inch pound 0.00182101 inch pound 2<br />
ShearModulus L 8<br />
<br />
45 ElasticModulus