288
Magnet rule
(lemmy.world)
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
this post was submitted on 11 Dec 2023
288 points (100.0% liked)
196
16601 readers
2211 users here now
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
founded 1 year ago
MODERATORS
Because the magnet is attached to the truck bed, so the bumper is being pulled forward and the bed pushed back, and the forces cancel out to 0.
Dumb follow up question. If there’s a way to reverse the direction the bed is being pushed, with gears or something, will that work? lol
You need a catapult in the back to fling the magnet ahead of you, you get pulled forward, pick up the magnet and fling it again. This technology has existed since the '20s but Big Internal Combustion Engine is repressing the tech.
Sure, but you'll need something to turn the gears.
Typically, we use a crank that converts a reciprocating motion into a rotation. Then we move a piston up and down by putting a little explosion at one end. Connect it to a tank of explosive fuel and badaboom, perpetual motion, as long as you have explosive fuel in the tank of course.
No, because in the end, something needs to keep moving the magnet forward to keep the truck moving forward.
This thought processes is exactly how scammers on YouTube make perpetual motion seem possible, but by definition, the forces always have to cancel out.