The Mechanics of Locks

The video tutorial explains the common household Yale locks, focusing on the cylinder pin tumbler lock mechanism. It traces the history of the lock's invention by Linus Yale Jr. and describes how the lock operates. The tutorial details the interaction between the key and the lock's internal pins, explaining how the correct key allows the lock to open by aligning the pins, while an incorrect key keeps the lock closed.

Who was responsible for the development of the cylinder pin tumbler lock?

• Linus Yale Jr.

• Nikola Tesla

• Thomas Edison

• Alexander Graham Bell

What is the main component of a lock that allows it to swivel inside its housing?

• The key

• The metal cylinder

• The springs

• The metal pins

What happens when the wrong key is inserted into a lock?

• The lock opens

• The pins are pushed upward

• The cylinder turns freely

• The cylinder remains in place

What role do the springs play in the lock mechanism?

• They unlock the door

• They create the key's jagged edges

• They turn the cylinder

• They keep the pins in place

How does the correct key open the lock?

• By breaking the springs

• By turning the cylinder without moving the pins

• By pushing the upper pins above the cylinder's edge

• By pulling the pins downward