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sirclash
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Homework Statement
A siren has two loud speakers attached to a rotating disk. The disks radius is 3m. The speakers emit a sound frequency of 300 Hz.(Speed of sound in air is 344 m/s)
A)How fast does the disk need to spin for an observer standing some distance away to perceive two frequencies that are different by by 50 Hz.
B)Whats the difference of the two frequencies if the disk is tilted by 50 degrees?(Hint: velocity is a vector)
Homework Equations
The Attempt at a Solution
Please help me get started. I'm assuming its both stationary observer and source but i don't know how to implement a rotation siren. Does that mean the source is actually moving?