A long rope with mass m is suspended from the ceiling and hangs vertically. A wave pulse is produced at the lower end of the rope, and the pulse travels up the rope. Does the speed of the wave pulse change as it moves up the rope, and if so, does it increase or decrease? Explain.

Question

Pugsley

Physics

11 January, 11:43

A long rope with mass m is suspended from the ceiling and hangs vertically. A wave pulse is produced at the lower end of the rope, and the pulse travels up the rope. Does the speed of the wave pulse change as it moves up the rope, and if so, does it increase or decrease? Explain.

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Answers (2)

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Felix Steele · Answer 1

Decrease

Explanation:

The wave impulse produced in the rope is likely to decrease. This is because there will be a damping effect. The downward effect of the rope has a damping effect on the rope. This means that the rope waves will be weaker or diminished by the time they get to the upper end of the rope. Thus, the wave magnitude decreases. In this way, the pulse or wave propagation on the rope decreases from down upwards.

Sarah Baker · Answer 2

The lower portion of the rope pulls down on the higher portions of the rope. Therefore, the tension in the rope increases as we move up the rope. What is the period of a wave if the wavelength is 100m and the speed is 200 m/s? ... Just like sound wave travels at a constant 340.29m/s in air, it does not change regardless.