A stretched string has linear density, μ=525 g / m and is under tension, T=45 N. A sinusoidal wave with frequency, f=120 Hz and amplitude 8.5 mm is sent along the string from one end. The wave speed is :

Question

A stretched string has linear density, μ=525 g / m and is under tension, T=45 N. A sinusoidal wave with frequency, f=120 Hz and amplitude 8.5 mm is sent along the string from one end. The wave speed is : (A) 62.9 m/s (B) 96.8 m/s (C) 7.28 m/s (D) 9.25 m/s

Tardigrade Admin · Accepted Answer

Wave speed v=√(T/μ)=√(45/(0.525))=925 m s -1

Q. A stretched string has linear density, $μ = 525 g / m$ and is under tension, $T = 45 N$ . A sinusoidal wave with frequency, $f = 120 Hz$ and amplitude $8.5 mm$ is sent along the string from one end.
The wave speed is :

62.9 m/s

96.8 m/s

7.28 m/s

9.25 m/s

Wave speed $v = \frac{T}{μ} = \frac{45}{( 0.525 )} = 925 m s^{- 1}$

Q. A stretched string has linear density, μ=525g/m and is under tension, T=45N. A sinusoidal wave with frequency, f=120Hz and amplitude 8.5mm is sent along the string from one end. The wave speed is :