A 400 Hz vibrating source produces a standing wave pattern in a 1.5 m string that contains...

Question

A 400 Hz vibrating source produces a standing wave pattern in a 1.5 m string that contains two
antinodes. When the same string is simply plucked so that it vibrates in its fundamental mode, it
generates a fundamental standing wave pattern in a closed pipe when the length of the pipe is 0.27 m.
a) Determine the wave speed on the string.
b) Determine the speed of sound from the data given.
c ) If the string continues to vibrate in its fundamental mode, how much must the pipe be lengthened
to generate the next standing wave pattern?

Robert · Accepted Answer

Q. A 400 Hz vibrating source produces a standing wave pattern in a 1.5 m 
string that contains two 
antinodes. When the same string is simply plucked so that it vibrates in its 
fundamental mode, it 
generates a fundamental standing wave pattern in a closed pipe when the 
length of the pipe is 0.27 m. 
a) Determine the wave speed on the string. 
b) Determine the speed of sound from the data given.

A 400 Hz vibrating source produces a standing wave pattern in a 1.5 m string that contains two antinodes. When the same string is simply plucked so that it vibrates in its fundamental mode, it...

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