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ikadub [295]
2 years ago
12

Calculate the frequency of a sound wave produced when a tennis racquet string is plucked. The tension of the string is 274 N, th

e mass of the string is 28 kg and the length of the string is 0.74 m.
Physics
1 answer:
diamong [38]2 years ago
4 0

Answer:

Explanation:

The velocity of sound from the plucked string in the tennis racquet is:

v=\sqrt{\frac{FL}{m}}=\sqrt{\frac{274(0.74)}{28}}\approx 2.69 ms^{-1}

Then the frequency will be:

f=\frac{v}{2L}=\frac{2.69}{2(0.74)}\approx 1.81 Hz

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Answer:

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Explanation: See Attached file (the rectangle stands for a jet)

The diagram shows forces acting on the jet

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R(rw)   Reaction of rear wheels

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R(fw)  = ( 1/4) *187*10⁶           ⇒   R(fw)  = 46.75*10⁶ (N)

And e do the same for the reaction on rear wheels

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R(rwi) = 70.125*10⁶ [N]

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