Why are natural magnets not used in cranes to lift heavy loads?
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The electromagnets can get magnetic nature as and when required so that they can lift heavy loads.But, in the case of permanent magnets, it is not possible to release the load because the permanent magnets never loses their magnetic property.
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Answered by
13
Electromagnetic crane is very convenient to use, but it must be used with the current. ... the weight that is sucked will not fall and the invisible magnetic force is more reliable ... crane is arranged on the steel claw, to lift heavy objects transported, ...
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