A free vibration test is conducted on an empty water tank shown in Figure 1. A cable attached to the tank applies F=120kN force with an angle a=46° to the vertical and pull the tank horizontally by uo-9cm. The cable is suddenly cut and the response of the tank is recorded. At the end of 4 complete cycles, the time is 2s, and the amplitude is 5cm. b) Determine the natural period and damping ratio if the tank is filled by water, Wwater-350kN. Figure 1

Elements Of Electromagnetics
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A free vibration test is conducted on an empty water tank shown in Figure 1. A cable attached to the tank applies F=120kN
force with an angle a=46° to the vertical and pull the tank horizontally by u.-9cm. The cable is suddenly cut and the
response of the tank is recorded. At the end of 4 complete cycles, the time is 2s, and the amplitude is 5cm.
b) Determine the natural period and damping ratio if the tank is filled by water, Wwater =350kN.
Figure 1
Transcribed Image Text:A free vibration test is conducted on an empty water tank shown in Figure 1. A cable attached to the tank applies F=120kN force with an angle a=46° to the vertical and pull the tank horizontally by u.-9cm. The cable is suddenly cut and the response of the tank is recorded. At the end of 4 complete cycles, the time is 2s, and the amplitude is 5cm. b) Determine the natural period and damping ratio if the tank is filled by water, Wwater =350kN. Figure 1
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