Each magnet pulls the rotor towards itself, so at first a magnet in front of the rotor accelerates it. But for the rotor to rotate further, it needs to move away from the magnet it was just being attracted to again, and that uses about as much energy as the rotor gained from the previous attraction. In sum, nothing is added or gained and you would’ve been better off not using any magnets at all.
Each magnet pulls the rotor towards itself, so at first a magnet in front of the rotor accelerates it. But for the rotor to rotate further, it needs to move away from the magnet it was just being attracted to again, and that uses about as much energy as the rotor gained from the previous attraction. In sum, nothing is added or gained and you would’ve been better off not using any magnets at all.
Each magnet pulls the rotor towards itself, so at first a magnet in front of the rotor accelerates it. But for the rotor to rotate further, it needs to move away from the magnet it was just being attracted to again, and that uses about as much energy as the rotor gained from the previous attraction. In sum, nothing is added or gained and you would’ve been better off not using any magnets at all.
Energy = force * distance. If you have two magnets attracting each other, you can get a little energy out by letting them move towards each other, but then you’d have to put that same energy right back in to move them away from each other, plus any energy that went to useful work, friction, and other losses.
At best you’re making an energy storage device, but not a very good one compared to a flywheel or battery.
tl;dr: the magnets push just as much slowing you down as they do speeding you up.
Energy = force * distance. If you have two magnets attracting each other, you can get a little energy out by letting them move towards each other, but then you’d have to put that same energy right back in to move them away from each other, plus any energy that went to useful work, friction, and other losses.
At best you’re making an energy storage device, but not a very good one compared to a flywheel or battery.
tl;dr: the magnets push just as much slowing you down as they do speeding you up.
Energy = force * distance. If you have two magnets attracting each other, you can get a little energy out by letting them move towards each other, but then you’d have to put that same energy right back in to move them away from each other, plus any energy that went to useful work, friction, and other losses.
At best you’re making an energy storage device, but not a very good one compared to a flywheel or battery.
tl;dr: the magnets push just as much slowing you down as they do speeding you up.
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