Consider the mass-spring system in Example 7.20. It is desired to give the first mode a damping factor of ζ1 = 0.1 by means of a damper c2. What should be the value of c2 be so that the approximate...

Consider the mass-spring system in Example 7.20. It is desired to give the first mode a damping factor of ζ1 = 0.1 by means of a damper c2. What should be the value of c2 be so that the approximate value for ζ1 = 0.1? Take c1 = 0. Calculate the value of ζ2 that results