George, as someone who stopped learning any kind of physics at the age of 13, I can't help with the technical stuff. As a machine that seems to have been designed to find the easy way to do things, let me suggest:
Make the cable shorter.
Unless you're planning to dig a 200m hole and put the magnet down it or pull something 200m long out of the ground, you don't need 200m.
Make the cable shorter.
Unless you're planning to dig a 200m hole and put the magnet down it or pull something 200m long out of the ground, you don't need 200m.
Comment