2. a) For spring-mass model 22" + e' + 5 = 2 cos(wt), what values of and w will result in resonance? Find the general solution for these values of amd w. b) For spring-mass model 20" 4 &' + 5~ 2008(2), find the general solution, identify the transient part and the steady periodic part of the solution, and find the amplitude of the steady periodic part, ) For spring-mass model 22" + ' + 52 = 2 cos(wt), find the w value that results in practical resonance, and finud the steady periodic amplitude st practical resonance