For the three mass system shown in the figure below using ma

For the three- mass system shown in the figure below using matrix iteration and influence coefficients determine: (a) the lowest natural frequency. (b) the modal fraction. Ignore the damping coefficients (c = 0).

Solution

Biomedical Imaging Question: Using the figure above, calculate the X-ray intensity, as a function of the incident intensity I0, that reaches the detector for each of the three X-ray beams. The dark-shaded area represents bone, and the light-shaded area represents tissue. The linear attenuation coefficients at the effective X-ray energy of 68 keV are 10cm-1 for bone and tissue, respectively.