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**Unformatted text preview: **Slinky Part B
youanny T.
Part B
And HR
table
1. Get two ring stands with the attached pole and put the poles exactly 1.0 meter apart on a
2. Take a slinky and count 3 or 4 coils from one end and slide that space down over one of the
3.
poles , then do the same on the other end of the slinky with the other ring stand.
Go to one of the ring stands and count 13-16 coils towards the middle of the slinky, and
using your finger pull those coils straight back towards the ring stand.
4. When you get to the stand measure the distance (width) ( in meters ) of these bunched up
coils - This will be the compression part of the longitudinal wave so multiply times 2 for the
full wavelength ( A ) (accounts for also the refraction part of the wave.)
5. Using a stopwatch, measure the time it takes for the wave to go down to the other stand
and back, and record this time.
6. Divide the total distance (2 m) by the time to calculate the velocity of the wave V = d / t
7. Move the ring stands so now they are 1.5 meters apart , again pull your rings back, measure
the bunch width again, multiply times 2, record this as the wavelength ( A )
Again time down and back, - ( remember the total length is now ** 3.0 m ) so calculate the
the velocity
8. Repeat the above for the distance 2.0 meters and 2.5 meters. Fill in the chart
Distance Stand's Separated
1.0 m
1.5 m
2.0 m
2.5 m
Wavelength A ( m )
2 x's bunched up coils
2:4
2.4
2.4
2. 41
Time for wave to go
down and back (sec)
. 79
. 83
. 89
. 98
Velocity of the Wave
m / sec * *
2.53
3.61
4. 49
5.10
Now that you know the wavelength and the speed of the wave you can calculate the frequency of
the wave by using f = V / A
Distance Stand's Separated
F = VIA
1.0 m
1.5 m
2.0 m
2.5 m
Frequency (Hz)
1.05
1.50
187
12. 12
Part A
Which set had the lowest frequency ?
Which set of coils had the slowest wave speed ?
The first set (set lion)
What was it that cause it to be the slowest
The last (sex 2:5m ) had the slowest
had the lowest freq, weary.
wave speed . This is due to the longer
distance.
Part B -
What happened to the wave speed when you stretched the slinky longer ?
Why do you think this happened ? The wave speed increased when we stretched
space to travel
the slindsy longer and I think this occured ave to having move
See the teacher about graphing your data results for part A and B...

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