Sound Waves Traveling Down a String

  • Thread starter eagles12
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  • #1
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Homework Statement



A brother and sister try to communicate with a string tied between two tin cans. If the string is 9.5m long, has a mass of 55g and is pulled taut with tension 6N, how much time does it take for a wave to travel from one end of the string to the other?

Homework Equations



v=√(F/M)
M=mass/length
t=d/v

The Attempt at a Solution



First, I converted 9.5m to 950cm and 55g to .055kg
I used these to find M=.055/950
M=5.7* 10^-5
I used F=6N and divided that by M, then took the square root and i got
v=321.96
then I divided 950 by 321.96 in order to get the time, and got
t=2.95 but this is incorrect.
 

Answers and Replies

  • #2
Doc Al
Mentor
45,093
1,397
First, I converted 9.5m to 950cm
Why? Meters is the units you want.
 

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