What is the difference between a lock and padlock and How Padlocks Work

If you are interested in learning the difference of a lock and padlock and how padlocks work, then you are at the right place!
 
What is the difference between a lock and padlock
As nouns the difference between padlock and lock is that padlock is a detachable lock that can be used to secure something by means of a sliding or hinged shackle while lock is something used for fastening, which can only be opened with a key or combination or lock can be tuft or length of hair. As verbs the difference between padlock and lock is that padlock is to lock using a padlock while lock is to become fastened in place.
 
How do locks work?
Most mechanical locks are fitted to things like doors and cupboards and have two physically separate parts. One part is fitted to the frame (the static part of the door) and is essentially a sturdy, metal reinforcement for a hole cut into the door itself (to prevent the locked door from being opened with brute force). The other part of the lock fits into a rectangular hole in the door (known as a mortise) and consists of a metal mechanism that moves a heavy bolt into or out from the reinforced hole. The bolt slides from side to side when you turn a key clockwise or anticlockwise, so it has to be operated by a mechanism that can convert rotary motion (the turning key) into reciprocating motion (the sliding bolt)—something like a cam or crank. If that were all that a lock consisted of, every key would be able to open every lock. So the other essential part of a lock's mechanism is a set of fixed or moving metal pieces (wards or tumblers) that engage with slots cut into the key, ensuring only one key can rotate, turn the cam, slide the bolt, and open the door.
 
How do padlocks work?
When we look at a padlock the most noticeable feature is the U-shaped shackle at the top. In the unlocked position, one end of the shackle pops out of the main body allowing this component to rotate freely. On the inside surface of the shackle we will find two notches. These form part of the lock mechanism and we’ll see that part shortly.
 
To lock the padlock we simply align the end of the shackle with the hole in the lock body and push these together. You’ll feel the internal locking mechanism engage and click into place, the shackle will now be unable to leave the body of the lock. To unlock the padlock we need to insert the correct key into the key hole at the bottom of the lock body, and rotate the key until it releases the shackle.
 
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