Waving goodbye

Classical Mechanics Level 2

A random transverse wave has wavelength 50 50 mm, frequency 40 40 Hz and an amplitude of 20 20 mm. Find the speed of the wave in m/s.

(^_^)/


The answer is 2.

Yuxuan Seah by Yuxuan Seah , 20, Singapore

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2 solutions

Noel Lo
May 27, 2015

The amplitude is a distractor haha LOL.

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Speed of wave v v is equal to the product of wavelength λ \lambda and frequency f f , ⇒ v = λ f \Rightarrow v=\lambda f , and is independent of the amplitude of the wave. Therefore, v = 50 1000 × 40 = 2 m / s v=\frac{50}{1000}\times 40 = 2\space m/s .

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