Table 6 Table for calculation in damping, when determined from the ratio of the resonant and natural b, frequencies. Perturbation Quantity Uncertainty a+da,b,c a,b+db,c a,b,c+dc Primary measurements a Natural Frequency (Hz) 18.9 0.1 19 18.9 18.9 b Resonant Frequency (Hz) 19 0.1 19 19.1 19 c Effective Spring Constant (N/m) 7583.164 456.0287 7583.164 7583.164 8039.193 Intermediate results Frequency ratio 1.005291 1 1.010582 1.005291 Result 12.68522 Viscous damping, b (kg/s) 0 13.06108 Change -12.6852 5.278042 0.375857 Uncertainty in damping (kg/s) 13.75312 Figures
Table 6 Table for calculation in damping, b, when determined from the ratio of the resonant and natural frequencies. Perturbation Primary measurements Quantity Uncertainty a+da,b,c a,b+db,c a,b,c+dc a Natural Frequency (Hz) 18.9 0.1 19 18.9 18.9 b Resonant Frequency (Hz) 19 0.1 19 19.1 19 c Effective Spring Constant (N/m) 7583.164 456.0287 7583.164 7583.164 8039.193 Intermediate results Frequency ratio 1.005291 1 1.010582 1.005291 Result Viscous damping, b (kg/s) 12.68522 0 13.06108 Change -12.6852 5.278042 0.375857 Uncertainty in damping (kg/s) 13.75312 Figures