For the system shown in the figure below determine the frequ

For the system shown in the figure below, determine the frequency and mode shape of the lowest natural mode. Assume the system is constrained to move only in the vertical direction and no twisting motion.

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.