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I1 (10 marks) A mechanical vibrator is connected to a string with linear mass density of 3.2 g/s. A block of mass 120 g is

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(10 marks) A mechanical vibrator is connected to a string with linear mass density of 3.2 g/s. A block of mass 120 g is suspended from a pulley on the other end of the string. a) What is the length of the string when string resonates at 18 Hz in fundamental mode? b) What should be the frequency for the string to resonate at 3" harmonic? c) Sketch the 3" harmonic resonance of the string

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