This Battery Train Goes UP, Not Sideways!

Can a simple "AA" Battery Train defy gravity and climb straight up? Let's test it. Please help me grow this channel    / @discoverbymaking   You can find even more on magnetic fields and battery trains in my video on The Horizontal Battery Train here    • The Brilliant Science Behind the Homopolar...   In this experiment, I am testing whether a standard "AA" battery can climb vertically against gravity. Normally a homopolar battery train runs horizontally not vertically. With the addition of some "wire whiskers" and optimising the battery, Neodymium magnets and the coil, I find out if the "Battery Rocket" can defy gravity despite its weight. I calculate the current needed to hover the battery by balancing the equations F=mg Newtons 2nd Law F=ma (acceleration replaced by gravity) F=q(VxB) The Lorentz Force Law F=BILsin0 The Motor Law, derived from the Lorentz Force Law I test the current by splitting the coil and connecting an ammeter along it to measure the current being generated by the battery as it passes. The video explores, electromagnetism, magnetic fields, current flow, and the mathematics of a homopolar battery motor in a practical hands on and entertaining way. good reference for STEM and Science Fair projects. #science #magnetmotor #sciencefairproject #stemlearning _________________________________________________________________________________________________ Parts used in the video: Pure Copper Wire 16 Gauge / 1.3mm 15mm diameter x 5mm thk N52 Neodymium Magnets (4 off) Build notes: This will only work with the pure copper wire, NOT the more common enamel coated wire that is used in motor windings ( the enamel will stop the electrical contact from the battery - magnet - whiskers) The coil diameter I used was 22mm ( I used a pole approx 20mm thick to form the coil ) This would appear to be the sweet spot for the 15mm diameter magnets to work in, larger coil diameter will not produce a strong enough reaction between the magnetic fields. Too small a coil diameter will amplify the effect of Lenz's law, which opposes the upward motion. Wind the coil as tight as possible, it will expand when hung, I ended up using a pitch of approx 4 coils per cm ( 10 coils per inch ) The closer the coils are together the stronger the field reaction. I used 3d printed brackets to hold the coil every 10cm, the brackets are supported by an acrylic rod, nothing on the stand should be made of ferrous metal ! One last point I noted was that if the entire coil is held on the stand rather than just supported every 10cm or so, It did not work as well as allowing the coil to have freedom of movement ! _________________________________________________________________________________________________ Chapters 0:00 Intro 0:37 Stopping the magnets from sliding off 0:58 The orientation of the magnets 1:16 Building the launch stand 1:40 The contact problem 2:04 Wire whiskers for better contact 3:13 The balance between mass, electromagnetic force and gravity 3:34 The math of F=mg, Lorentz force F=q(V x B) and F=BIL 4:28 The affect of coil angle vs magnetic field lines 6:01 Perfect balance of electromagnetic force and gravity 6:24 Battery Rocket levitation 6:46 Checking the actual current from the battery 7:36 Can a battery motor climb the high vertical coil 8:45 Rotational Spinning of the homopolar motor 8;58 Next videos to watch