XaiJu
No Dumb Questions
No Dumb Questions

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I wanted to call this episode 173 - Why Your Perpetual Motion Machine Idea is Dumb and Stupid and Will Never Ever Work and You Should Feel Bad

...but Destin thought that was too much. I don't even know why we're still friends.

Comments

I still use my Gravity Light while camping. It's great when I forget spare batteries for lanterns on occaions.

In reference to your conversation about optimizing a spinning top, I saw this video recently. https://youtu.be/LTVhbLpQrJs?si=7QtZZ2_lVNSD_RMV

I don't know, your draft of the title is kinda short still. Maybe the title should be a quick 1000 word essay on why perpetual motion machines don't work, and why they are typed by the law they break.

Mike Soberdude

Phone Charging Grandfather Clock How high would we have to lift Destin’s heaviest dumbbell (15 lbs / 6.804 kg) to charge an iPhone 15? Assumptions: Matt, using his fish tank has figured out, how to eliminate all entropy. Through the careful application of this knowledge, Matt created a gravity assisted USB C iPhone charger with 100% efficiency. Nice work! Solution: The iPhone 15 has a 12.981 watt-hour battery *source: the internet (therefore it’s true) This is how many Joules of energy? (12.981 Wh)(3600 J/Wh) = 46,731.6 J How high do I have to lift Destin’s 15 lb dumbbell to achieve the same energy? E = Fd = (ma)h = mgh E = (6.804 kg)(9.8 m/s2)(h) = 46,731.6 J h = (46,731.6 kg m2/s2) / [(6.804 kg)(9.8 m/s2)] = 700.842 m h = (700.842 m)(3.281 ft/m) h = 2299 ft 4 inches The Empire State Building is 1,250 ft high. Doing some other math, assuming a 1 hr 48 min charge time, the weight would have to transfer energy while descending at 4 1/4 in/s. …gives a deeper appreciation for stored chemical energy! The YouTube video: “Olympic Cyclist vs. Toaster” forever changed my perspective on electricity. “It is by logic that we prove, but by intuition that we discover.” - Henri Poincare


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