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rangareddy

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the problem is i have one oscillatory mechanical system. For this system we r applying periodic force sinusoidally. for this system at entry and exit we are measuring the displacement signal and force signal. at resonance frequency the out put displacement and force signal is much higher than at input values. I am calculating the workd done at input and out put based on the formula W=|F|*|dx| based on this formula i am getting more work at output than input ,, is it mean that our system efficiency is more than 100%..

i am confusing where i am doing mistake.. can some one help me in this..

thanks