- #1

ahchew1413

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## Homework Statement

Original question: A boy flicked a string harder, describe the changes of the waveform and the speed of the wave.

## Homework Equations

V = f x λ

Frequency is how many completed oscillation per second.

Wavelength is distance between two adjacent points of the same phase on a wave.

## The Attempt at a Solution

My answer: Amplitude will increase, and speed remain unchanged. Flicked harder, more energy received, amplitude bigger. Speed depend on medium, so unchanged.

My confusion:

1. The displacement of pendulum is amplitude, how to find wavelength from there?

Let said From A to B to C to B to A. Is the wavelength is the distance move by the pendulum along the path?

2. If the amplitude turn bigger but the speed remain, it should take more time to go up and down, so wavelength become shorter?

3. By assume statement 2 is correct, according to the formula, frequency should be higher. Am I right

Very confused.

ahchew1413