DivLab - Moment Arm Spring arm length 21 cm 16.5 in M0 vs Alpha Spring Arm Length 18.8 in M0 vs Alpha Spring Arm Length 23.75 in 50 45 f(x =

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Moment Arm: 21 cm Spring arm length: 16.5 in Spring Arm Length in 23.75 Moment Arm (in) 8.625 .1 offset Force (lb) F*r Angle (deg) Angle (rad) k (lb/rad) k (lb/deg) 2.048 17.664 3.9 0.06806784 259.5058 4.529231 E: 3E+007 30000000 3E+007 1.956 16.8705 3.7 0.06457718 261.2455 4.559595 4.992 43.056 9.5 0.16580628 259.6765 4.532211 Perturbations: Primary Measurements: Uncertain a+da,b,c a,b+db,c a,b,c+dc Average 260.1426 4.540345 base: 2.152 0.005 2.157 2.152 2.152 Theoretical 289.7 height: 0.075 0.005 0.075 0.08 0.075 q (in H2O) Angle (deg) alpha/q Uncertainty: .2 0.09757 5.593192 Intermediate Measurements: 0.6 1.3 2.1666666667 length: 23.75 0.5 23.75 23.75 24.25 0.8 1.9 2.375 moment of inertia: 7.5656E-005 7.6E-005 9.1819E-005 7.5656E-005 1 2.6 2.6 1.22 3.4 2.7868852459 theoretical k Uncertainty in Derived Result: 1.35 4.1 3.037037037 k = 3EI/L k: 286.6973684 287.3635 347.9444211 280.7860825 I = bh^3/12 Change: 0.666118 61.24705263 -5.911285947 2.5931177899 b = 2.152 in Total Uncertainty in k:
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This note was uploaded on 01/23/2012 for the course AOE 4154 taught by Professor Simpson,r during the Fall '08 term at Virginia Tech.

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