My timely Trivia thought of the day

[j-c-c-62]

So, I am sitting in the exam room this am waiting for the Dr to arrive, watching the ticking wall clock.
I observe the second hand is the longest hand, albeit though the slenderest of the three, but thinking maybe it has the highest MOI.
I have little understanding of how clocks work internally. I suspect if all of the hands run off of one single motor, the second hand motor running by the gearing as the fastest hand, it also has the least torque input.
This is the crux of my trivia thought, when the second hand is moving from 12 to 6, under the assistance of gravity. move faster than when going from 6 to 12 when it's fighting gravity?
At the end of the day, there should be no overall difference as it should all even out,
But over 60 seconds on the wall mounted clock, does the speed of time change over the course of every minute?

 

[Richard Cranium]

And what is MOI?

 

[Davefinan]

This is exactly what waiting forever in a doctors office does to you…

 

[copper67sat]

View attachment 1793023

And what is MOI?

My guess is Moment of Inertia, essentially how much torque is required to move the mass.

 

[Davefinan]

View attachment 1793023

And what is MOI?

If I have to play one more upbeat f ing song after a f ing death dedication……

 

[3sloppydogs]

And that's why they went to digital clocks
To drive engineers crazy

 

[threewood]

Interesting. I would think less energy used when going from 12 to 6 and more energy from 6 to 12. How is battery life effected? The gearing and timing of the mechanism should keep it on time. Ask the doctor.

Side note, seeing my gastrointestinal doctor pre colonoscopy I asked him what a stomach growl looks like through the camera and he didn't have any idea. It's gotta look like something, right!

 

[j-c-c-62]

Side note, seeing my gastrointestinal doctor pre colonoscopy I asked him what a stomach growl looks like through the camera and he didn't have any idea. It's gotta look like something, right!

That is a very good question

 

[Dave6T4]

So, I am sitting in the exam room this am waiting for the Dr to arrive, watching the ticking wall clock.
I observe the second hand is the longest hand, albeit though the slenderest of the three, but thinking maybe it has the highest MOI.
I have little understanding of how clocks work internally. I suspect if all of the hands run off of one single motor, the second hand motor running by the gearing as the fastest hand, it also has the least torque input.
This is the crux of my trivia thought, when the second hand is moving from 12 to 6, under the assistance of gravity. move faster than when going from 6 to 12 when it's fighting gravity?
At the end of the day, there should be no overall difference as it should all even out,
But over 60 seconds on the wall mounted clock, does the speed of time change over the course of every minute?

My brain is starting to hurt! Stop it!

 

[69Bee]

Most second hands have a larger mass on the rear than the front. With the different moment arm distance, if the mass of each side is equal, then it should not matter. The weight which is equal to mass x gravity is equal to the "Normal" force otherwise, the object will float if the Normal is larger and imbed into the ground if the weight (m x g) is heavier. The arm should be equal to cancel any differences out down vs. up.

 

[j-c-c-62]

This one did not have an offsetting mass equivalent that was visible, if you mean "rear" as being behind the dial, so I don't know but it would resolve this issue as you note.

Next appointment I will bring a screwdriver and find out, as I usually have enough to time to check.

It would seem though that smallest mass possible (discounting the effects this post about) would conserve energy used here and important if battery powered, as the clock in question was a "stepped" movement, meaning no conservation of any momentum, as it was starting and stopping 60 times a minute.

 

[69Bee]

Rear was meant to be the short side moment arm, and the front is the longer moment arm side.

 

[DeltaV]

Time for intermission

 

[Unkle Krusty]

For more exciting stuff, research Harrison, a carpenter, and the need for a decent timepiece, so the offshore boaters knew where they were. My highly accurate Bulova, is good for about 5 seconds per year. The super highly accurate clocks used for GPS and other stuff, are good for about 1 second per million years. What if you were in the middle of a thought process, when the nurse called you in.

 

[DeltaV]

 

[Tony Tee]

Nothing to do with clocks. Just trivia, Which two of the 50 united states, has the least amount of earthquakes?

 

[WileE]

Nothing to do with clocks. Just trivia, Which two of the 50 united states, has the least amount of earthquakes?

Offhand, I would say Alaska and Florida ?

 

[WileE]

Time for intermission

Here's a better one

 

[Tony Tee]

You got florida !

 

[3sloppydogs]