Somebody told me: Keep it simple, stupid. Thank you for doing that. My question is: Why doesn't spreading the energy out over a larger area reduce the force of the vibration and thereby counteract the extra surface area?
Excellent video. To get the line of best fit for the two curves: Charging a capacitor: V (x) = 17.25 (1 - exp(-x/66) ) Dischargeing a capacitor: V (x) = 17.25 exp(-x/66) *17.25 was what the the capacitor was discharged from at t=0 so I called that Vo (see 8:45 )
Thank you very much brother. Moreover, brethren, I declare unto you the gospel which I preached unto you, which also ye have received, and wherein ye stand; By which also ye are saved, if ye keep in memory what I preached unto you, unless ye have believed in vain. For I delivered unto you first of all that which I also received, how that Christ died for our sins according to the scriptures; And that he was buried, and that he rose again the third day according to the scriptures: ~1 Corinthians 15:1-4 God bless you!
So when i hit the fork harder or softer, the fork will vibrate at same frequency? but the amplitude will vary. or, when i hit it harder, it starts at high frequency(more vibration) and eventually comes down to the tuned frequency, and as time passes the frequency reduces and the fork stops. Then i can say, any fork, with the same height, width and mass (also same material) OR same proportion of these components. how hard we hit - at a particular frequency the pitch of the sound will be same but just the amplitude may vary.
@@joelbryan7822 only in ideal world. The resonant frequency depends on hardness which is not linear (think about your object as a spring), so the bigger the amplitude the higher the resonance frequency, which gradually decreases together with amplitude. This effect is very little here, i could not pick it up by smartphone app with spectrum analizer, since it has only 1 Hz precision, but it definitely exists with speakers. It is easy to test if you have unstable amplifier with positive feedback loop, it forces the speaker to resonate on it's natural frequency and this frequency changes with amplitude floating by as much as 5%.
@@user-yh7zc9ke4s Thank you for your comments. Often in introductory physics we deal with ideal cases and ignore effects of surface tension, pulley friction, string mass, rotational inertia, etc... I do use a frequency analyzer to show my students that all tuning forks vibrate at more than one frequency, but the dominant (fundamental) frequency is the one we hear most loudly and is the frequency stamped on the tuning fork.
@@DownHillSkateTime so very sorry for the constructive criticism. Some of us old people don't hear so well and to me the sound was inferior. But now I'm so very sorry for trying to help you out.
Can I ask how you created the folders? When I try to color them it won't work for red, cyan, yellow and magenta. I am using pure red, pure green, and pure blue light emitted by a Smartphone screen.
Thank you!! Please keep doing more useful, awesome videos like this( because it's gonna be on my exam). I supposed to say that your lecture is extremely easy to understand and I love your voice. Thanks u really much!!! :3
