The drawing shows an arrangement in which a block (mass = 19.2 kg) is held in position on a frictionless incline by a cord (length = 0.450 m). The mass per unit length of the cord is 1.44 x 10-2 kg/m so the mass of the cord is negligible compared to the mass of the block. The cord is being vibrated at a frequency of 234 Hz (vibration source not shown in the drawing). What is the maximum value of the angle θ in degrees at which a standing wave pattern exists on the cord?

The drawing shows an arrangement in which a block (mass = 19.2 kg) is held in position on a frictionless incline by a cord (length = 0.450 m). The mass per unit length of the cord is 1.44 x 10-2 kg/m so the mass of the cord is negligible compared to the mass of the block. The cord is being vibrated at a frequency of 234 Hz (vibration source not shown in the drawing). What is the maximum value of the angle θ in degrees at which a standing wave pattern exists on the cord?

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