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The frequency of vibrating pendulum lies below the audible range (20 Hz to 20,000 Hz)
The lowest frequencies we can hear are about 20 Hz - 20 vibrations per second. If (for example) the pendulum moves back and forth once per second, it will produce sound at that frequency, which we are unable to hear. Also, the sound will be of a fairly low intensity.
First take the average of your times:(12.6 + 12.7 + 12.5 + 12.6 + 12.7) / 5 = 12.62This is your average time for 20 oscillations. The period is the time for one oscillation, and therefore the period is 12.62/20 = 0.631 seconds.A complete oscillation is when the pendulum swings from the start position to the opposite position on the swing and back again. Assuming this is what you counted twenty of, then your pendulum is 10 cm long.If you counted 20 swings to each side, then you really only counted 10 oscillations. This means that your period would be 1.262, and would suggest that your pendulum is 40cm long.
Time period = 1 / frequency. Frequency = 1 / time period. f = 1 / 0.005 = 200 Hz
Generally, no sound is heard when a "simple pendulum" oscillates because of what is happening. It's just moving through the air. In a clock the sound of the "ticking" is the sound of the escapement operating. The pendulum itself makes only "air noise" as it moves back and forth. The pendulum is so small and moves in such a limited way that even if the mechanism was not encased or otherwise screened, it is imporbable that it could be heard moving through the air. In the case of a Foucault pendulum, particularly one of the big ones found in a museum or other display, the weight (called a "bob") on the end of (usually) a cable is massive (to increase the effect of the display - plus, it makes it more "fun" to see a huge weight in motion), and it can be heard moving through the air by a determined listener (if conditions are favorable). Use the link to the article on the Foucault pendulum posted by our friends at Wikipedia.
The frequency of vibrating pendulum lies below the audible range (20 Hz to 20,000 Hz)
The lowest frequencies we can hear are about 20 Hz - 20 vibrations per second. If (for example) the pendulum moves back and forth once per second, it will produce sound at that frequency, which we are unable to hear. Also, the sound will be of a fairly low intensity.
First take the average of your times:(12.6 + 12.7 + 12.5 + 12.6 + 12.7) / 5 = 12.62This is your average time for 20 oscillations. The period is the time for one oscillation, and therefore the period is 12.62/20 = 0.631 seconds.A complete oscillation is when the pendulum swings from the start position to the opposite position on the swing and back again. Assuming this is what you counted twenty of, then your pendulum is 10 cm long.If you counted 20 swings to each side, then you really only counted 10 oscillations. This means that your period would be 1.262, and would suggest that your pendulum is 40cm long.
Period = reciprocal of frequency ( 1 / frequency ) = 1/50 = 0.02 second = 20 milliseconds
Time period per oscillation=32/ 20=1.6 sec per oscillation.
If the logic 0 is the 20% then the period is 2ms and the frequency is 500 Hz. If the logic 0 is the 80% then the period is 50us and the frequency is 20kHz
.05 seconds
20 s
Period = 1/frequency = 1/50,000 = 0.00002 second = 20 microseconds
Time period = 1 / frequency. Frequency = 1 / time period. f = 1 / 0.005 = 200 Hz
The period is 4 [insert units here]. To get to this answer you use the equation v= λ*ƒ which basically means velocity is equal to lambda (wavelength) times frequency. Next you insert the speed where velocity is then you insert the wavelength and try to find the frequency. Once you get the frequency which should be 1/4 Hz then you use the proportion: period ~ 1/frequency and then you know that the period is 4.
Generally, no sound is heard when a "simple pendulum" oscillates because of what is happening. It's just moving through the air. In a clock the sound of the "ticking" is the sound of the escapement operating. The pendulum itself makes only "air noise" as it moves back and forth. The pendulum is so small and moves in such a limited way that even if the mechanism was not encased or otherwise screened, it is imporbable that it could be heard moving through the air. In the case of a Foucault pendulum, particularly one of the big ones found in a museum or other display, the weight (called a "bob") on the end of (usually) a cable is massive (to increase the effect of the display - plus, it makes it more "fun" to see a huge weight in motion), and it can be heard moving through the air by a determined listener (if conditions are favorable). Use the link to the article on the Foucault pendulum posted by our friends at Wikipedia.