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consider a very long rope at rest on a frictionless surface and placed parallel to the -axis. if its left end is quickly shaken up and down once, a perturbation of the shape of a pulse propagates along the rope from the left to the right end. if there is no energy losses, the pulse will propagate along the rope without changing its original shape.

Respuesta :

Yes if there is no energy losses, the pulse will propagate along the rope without changing its original shape.

In every rope, the least dense rope has the largest wavelength. Crossing a barrier does not change a wave's frequency. If a wave in a less dense rope is traveling toward a border with a more dense rope, the reflected pulse will become inverted. The pulse will travel the length of the rope without altering its original shape if there are no energy losses.After reflecting off the fixed end, the pulse is inverted. To put it another way, a pulse with an upward displacement will reflect off the end and return with a downward displacement. When the medium's end is fixed, this characteristic of inversion will always be seen. When a wave or pulse moving through one medium encounters the boundary of another, a portion of the incident pulse is reflected off the border and a portion is transmitted over the boundary.

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