Why are permanent magnets not used in cranes to lift heavy loads?

A few pieces of similar looking magnets and iron are lying on a table. can you separate them with the help of a piece of iron? explainhow

  • Cranes uses electromagnets rather than permanent magnets.
  • The electromagnets can get magnetic nature as and when required so that they can lift heavy loads.
  • After lifting and moving to other place, the electromagnet can release the load by losing the magnetic property.
  • But, in the case of permanent magnets, it is not possible to release the load because the permanent magnets never loses their magnetic property.
The given iron piece attract magnets among the given pieces. In this way, the magnets can be separated among the given pieces. Then, the remaining pieces are only iron pieces. In this way, we can separate iron and magnets among the given pieces.

  • 12
What are you looking for?