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A body of mass 70 Kg is suspended from a spring that deflects 20 mm under the load. If the damping factor of 0.23 is provided then find the natural frequency of damped vibrations and ratio of successive amplitudes for damped vibrations. If the body is subjected to a periodic disturbance of 700 N at a frequency of 17.277 rad/sec, find the amplitude of forced vibration and the phase angle with respect to the disturbing force.
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