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Q: What is the period of a simple pendulum is its frequency is 20 Hz?
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Why a viberating pendulum does not produce sound?

The frequency of vibrating pendulum lies below the audible range (20 Hz to 20,000 Hz)


Why does vibrating simple pendulum not produce any sound?

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.


How do you find determine the period of the pendulum A pupil obtains the following values for 20 oscillations of a pendulum 12.6s 12.7s 12.5s 12.6s 12.7s Determine the period of pendulum?

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.


What is the frequency of a wave with a period of 0.125?

Time period = 1 / frequency. Frequency = 1 / time period. f = 1 / 0.005 = 200 Hz


Why do you hear sound produced by the humming bees while the sound of vibrations of pendulum is not heard?

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.

Related questions

Why a viberating pendulum does not produce sound?

The frequency of vibrating pendulum lies below the audible range (20 Hz to 20,000 Hz)


Why does vibrating simple pendulum not produce any sound?

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.


How do you find determine the period of the pendulum A pupil obtains the following values for 20 oscillations of a pendulum 12.6s 12.7s 12.5s 12.6s 12.7s Determine the period of pendulum?

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.


A wave has frequency of 50 Hz what is the period of the wave?

Period = reciprocal of frequency ( 1 / frequency ) = 1/50 = 0.02 second = 20 milliseconds


If a pendulum takes 32 seconds to complete 20 oscillations. Calculate the time period?

Time period per oscillation=32/ 20=1.6 sec per oscillation.


If the duty cycle of a rectangular waveform is 20 percent and the signal is a logic 0 for 40µsec what is the signal frequency?

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


If a wave has frequency of 20 Hz what is the period of the wave?

.05 seconds


What is the ride's period of an amusement park ride has a frequency of 0.05 Hz?

20 s


What is the period of a 50 kHz sine wave?

Period = 1/frequency = 1/50,000 = 0.00002 second = 20 microseconds


What is the frequency of a wave with a period of 0.125?

Time period = 1 / frequency. Frequency = 1 / time period. f = 1 / 0.005 = 200 Hz


What is the period of a wave with a wave speed of 5 and a wavelenth of 20?

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.


Why do you hear sound produced by the humming bees while the sound of vibrations of pendulum is not heard?

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.