A rotating machine with Mass M1 = 200 kg is designed to operate in the speed range of 2400 to 4000 RPM. However, the machine is found to oscillate violently at its peak at 3000 RPM due to a rotating unbalance on the machine. (a) Design a vibration absorber (i.e. determine M2 and K2) tuned to 3000 RPM with the smallest weight possible such that the peak frequencies will fall outside of the operating range of the machine and locate your peak 2 at Wb = 4600 RPM. (b) Determine the location of your peak 1 in RPM. (c) Determine the effective range of the vibration absorber. (d) Sketch in a Magnitude Ratio versus RPM graph to illustrate the locations of the peaks, the operating range and the effective range of the absorber. M1 ME K2 10M K1 //////////