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Pre-class Quiz

Question 1 Given a system of coupled identical oscillators \((m_1=m_2=m)\) and \((k_1=k_2=k_3=k)\), how would you define the second normal mode?

a) The two masses oscillate with equal amplitude

b) The two masses oscillate sinusoidally and exactly out of phase

c) The two masses oscillate out of phase

d) The two masses oscillate with equal amplitude and in opposition of phase

Choose one:




Question 2 The figure below

shows graphs of the two positions of a system of identical coupled oscillators.

In the space below write a brief explanation about what happens when both normal frequencies are present.