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2. Magnetic bearing - Wikipedia

   en.wikipedia.org/wiki/Magnetic_bearing

   A magnetic bearing. A magnetic bearing is a type of bearing that supports a load using magnetic levitation. Magnetic bearings support moving parts without physical contact. For instance, they are able to levitate a rotating shaft and permit relative motion with very low friction and no mechanical wear. Magnetic bearings support the highest ...

3. Accelerator Coaster - Wikipedia

   en.wikipedia.org/wiki/Accelerator_Coaster

   The catch-car is stopped by magnetic brakes identical to those used to stop the train. In order to give the catch-car room to slow down, only about three quarters of the launch track can actually be used to launch the train; a catch-car on a 100 km/h Accelerator Coaster needs 64 feet/20m to stop, and more on faster coasters like Kingda Ka.

4. Eddy current brake - Wikipedia

   en.wikipedia.org/wiki/Eddy_current_brake

   Disk electromagnetic brakes are used on vehicles such as trains, and power tools such as circular saws, to stop the blade quickly when the power is turned off.A disk eddy current brake consists of a conductive non-ferromagnetic metal disc attached to the axle of the vehicle's wheel, with an electromagnet located with its poles on each side of the disk, so the magnetic field passes through the ...

5. Crowbar - Wikipedia

   en.wikipedia.org/wiki/Crowbar

   A crowbar with a curved chisel end to provide a fulcrum for leverage and a goose neck to pull nails. A crowbar, also called a wrecking bar, pry bar or prybar, pinch-bar, or occasionally a prise bar or prisebar, colloquially gooseneck, or pig bar, or in Australia a jemmy, [1] is a lever consisting of a metal bar with a single curved end and flattened points, used to force two objects apart or ...

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