Two violin strings are tuned to the same frequency 294 hz., Ask an Expert

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Q. A 200 g ball is tied to a string. it is pulled to an angle of 8 degrees and released to swing as a pendulum. a student with a stopwatch finds that 10 oscillations take 12 s. how long is the string?

Q. Two violin strings are tuned to the same frequency, 294 Hz. The tension in one string is then decreased by 1.5 %. What will be the beat frequency heard when the two strings are played together?

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