Question

A stroboscope was used to determine the frequency of the string oscillator. Strobe frequencies fs were...

A stroboscope was used to determine the frequency of the string oscillator. Strobe frequencies fs were recorded where a single stationary image of the oscillating string was observed. The frequency of the oscillator f can be determined from the stroboscope frequencies fs by f = nfs where n is an integer corresponding to the number of oscillations per flash. The strobe frequencies produced were determined and tabled below:

Strobe Frequency fs
Hz
Oscillations per
flash n
22.9 m
15.2 m+1
11.8 m+2
8.8 m+3

m an integer, is determined to be 2.

The oscillator frequency is determined to be f = 45.65 Hz, from the average of nfs.

Use the mean error technique to determine the uncertainty f. Express the answer to two decimal places, with the SI unit included.

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