Okay. Maybe even dumb it down a little more? Just in case someone out there still doesn’t get it. Not me, I get it. Just someone else might not, and what about them you know?!
Magnets transmit force, they don’t magically create energy. It takes energy to move the car, not just a static force being present. It’s the same as taping a stick to it without the magnets. Unless someone pulls on the stick (or magnet), no energy is entering the system and no work can be done.
Actually it would be the same force on the car if you removed the arm holding the magnet and placed a block of wood in the space between the magnets. It’s a static system
Just like the hanging magnet is pulling on the car, the car magnet is also pulling on the hanging apparatus. Unfortunately for the car, the apparatus is attached to it, so it all cancels out.
The magnet is not pulling the car, the hand holding the magnet is pulling the car.
Okay. Maybe even dumb it down a little more? Just in case someone out there still doesn’t get it. Not me, I get it. Just someone else might not, and what about them you know?!
Imagine a string instead of two magnets. If the hand pulls the string, the car moves. If the string is tied to the car?
Magnets transmit force, they don’t magically create energy. It takes energy to move the car, not just a static force being present. It’s the same as taping a stick to it without the magnets. Unless someone pulls on the stick (or magnet), no energy is entering the system and no work can be done.
Time to draw some free body diagrams!
Actually it would be the same force on the car if you removed the arm holding the magnet and placed a block of wood in the space between the magnets. It’s a static system
Just like the hanging magnet is pulling on the car, the car magnet is also pulling on the hanging apparatus. Unfortunately for the car, the apparatus is attached to it, so it all cancels out.