Question

A lock and key is a lever of which order?

Answer 1

Answer: The lock and key mechanism is as follows: The insertion of the keyinside the lock acts like the 'effort' applied to the mechanism from one end. The effort applied by the key turns or pushes the cylindrical pins in thelock which acts like a 'fulcrum' at the centre of the mechanism.
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Answer 2

A lever tumbler lock is a type of lock that uses a set of levers to prevent the bolt from moving in the lock. In the simplest of these, lifting the tumbler above a certain height will allow the bolt to slide past.