PASCO WA-9857 String Vibrator - Manual (Page 24)

String Vibrator Teachers’ Notes–Standing Waves In Strings
24 ®
Analysis Method 2
f = (60.0 ± 0.1) Hz
L = (0.987 ± 0.001 m)
This result differs from the direct measurement of linear density by 0.01 × 10
-4
kg/m. It is within
the estimated uncertainty.
F vs. n
F vs. 1/n
2
Slope = 3.74 ± 0.01 N
4
µf 2
L
2
3.74 0.01 N
±
=
µ
3.74 0.01 N
± ( )
4f
2
L
2
-------------------------------------- 2.67 0.01
± ( ) 10 4 – ×
kg/m = =
% Deviation
2.67 10
4 – ×
kg/m 2.66 10
4 – ×
kg/m –
2.66 10
4 – ×
kg/m
--------------------------------------------------------------------------------------- 100%
Ч
0.4% = =