Physics teacher built multiple practical demonstrations to show how inertia works

Physics teacher built multiple practical demonstrations to show how inertia works

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  1. In the part with the two ramp sections that began and ended with the same height, but one ramp had a lot more bumps and drops, why did the ball on the bumpy ramp travel faster than the ball on the other ramp?

  2. If I could turn invisible I would go and fuck with this man during a presentation. He releases the ball on a Galileo track? I nudge it to go over the edge and off the other side.

  3. That pendulum example vs the two ramps is a bit misleading. The pendulums have a circular path, but that is only an approximation of the true solution of the same-time curve: the cycloid.

  4. Gotta love High-School physics teachers. They get to teach the greatest hits of the Enlightenment and are the probably the first people to make kids think about the big picture.

    All while narrowly avoiding safety regulations and and working with a budget that was drafted in the 1980s.

  5. This is crazy for me to see. This guy was my middle school science teacher so so long ago and I had no clue he made these!

    He single handedly got me interested in the sciences. After having his class I went on to take every science class that small rural school had to offer. Without him, I definitely wouldn’t have had the interest or foundation in science to drive me to where I am today.

    Thank you Mr. Yeany!

  6. These are the best kind of teachers. Absolutely brilliant. These are the educators that lead students to think critically. Reminds me of my great science teachers growing up. We need more of these people!

    Awesome video. As an adult engineer I️ really enjoyed the quality in the demonstrations.

  7. Question on the last example with 3 different pendulem lengths.

    Would they all have the same counts across the bar?

    So would the 1 second one, go back and forth 20 times, and 2 go 20 times, and 3 go 20? Surely not, right?

  8. So this is how grandfather clocks work. The pendulum has a period of one second, which rotates the the second hand, then rotates the minute hand at 60 seconds – rotating the hour hand after 60 minutes?

    As stupid as it sounds, it makes you appreciate the mechanics much more.

  9. I wish this guy had taught my physics class, I always enjoyed physics but my teacher never produced anything physical like this to demonstrate through visual learning.

  10. The tracks with bumps look a lot like financial charts for businesses. For example, Benjamin Graham explains that companies that are highly levered have speculative capitalization structures, and can provide above average returns, and above average losses. The extremities appear to be explained by inertia, losses intensify due to higher leverage, and if there is success at the end of the road, the speculatively capitalized company may rise much faster than the competitor which did not have a speculative capitalization structure. Not speculative capitalization is analogous to the flat track.

    Likewise a startup, which goes down in cash flow due to startup costs, and is expected to ‘shoot to the moon’.

    Interesting stuff!

  11. This was awesome. I love highschool physics. This video reminds me of a great video done with Michael from vsauce and one of the guys from myth busters. Basically the shortest distance between two points is a line but the fastest is a curve (to a certain degree). Was really cool.

  12. He said “heighth” at about 0:44, and again at 3:44.

    There is length, width, and height. If there is “heighth,” shall we then call the next dimension “timeth?”

    I cannot abide such egregiousness in an educator.

  13. By my best estimation as a teacher, this guy is a *good* teacher, but am I the only one around here who thinks a physics teacher shouldn’t be saying “heighth” in a lesson?

  14. And to think if he just played educational videos and made you fill out packets none of his coworkers or his principal would bat an eye… and he would get the same salary.

    It’s a shame that there are teachers out there that are really passionate – but don’t get rewarded in ways that make sense.

  15. I thought that Galileo’s assertions regarding pendulum’s periodicity and amplitude were bullshit? I just read it in James Gleick book “Chaos”.

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