Physics Blog 12

Last Thursday, as the workers were preparing for the Iolani Fair, I was running to physics class from the band room because I was late.  During the journey, I ran past a beeping forklift.  The beeping at first was a low note but as I ran closer to it, the beeping became louder and higher.  After I past the forklift, the beeping went from high frequency back to low frequency.  Then I went to physics.  The strange beeping phenomonon was caused due to doppler effect.  As I ran closer to the forklift, frequency increased due to the eqn: Flist= Fsource(v+or-vlist/V-or+vsource).  Because I was moving closer to the forklift, the top of numerator in the doppler effect equation increased causing frequency to increase.  When I past the forklift and moved away from it, the frequency went back down from my perspective because the numerator decreased.