A steel piano string of mass per unit lenght 4×10-⁴kgm-¹ was struck, if the speed of the sound on the string is 300ms-¹. Calculate the tensi

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A steel piano string of mass per unit lenght 4×10-⁴kgm-¹ was struck, if the speed of the sound on the string is 300ms-¹. Calculate the tension.​

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Thanh Hà 3 years 2021-08-23T14:53:33+00:00 1 Answers 5 views 0

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    2021-08-23T14:54:37+00:00
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    Answer:

    36 N

    Explanation:

    Velocity of a standing wave in a stretched string is:

    v = √(T/ρ),

    where T is the tension and ρ is the mass per unit length.

    300 m/s = √(T / 4×10⁻⁴ kg/m)

    T = 36 N

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