It's a lever. Doors work on hinges. Same thing as a fulcrum, only in a different position
A door on hinges is an example of a lever. The hinge acts as the fulcrum, allowing the door to pivot open or closed.
A pulley isn't a kind of simple machine, it is a simple machine
A train is not a simple machine.
A door lock is typically considered a combination of a lever and wedge simple machines. The lever is used to turn the lock mechanism, while the wedge secures the door in place when the lock is engaged.
IT's NOT A SIMPLE MACHINE!
its not a simple machine
A garage door is typically classified as a compound machine, as it combines several simple machines such as levers, pulleys, and inclined planes to function. The torsion spring system used in garage doors utilizes the principles of leverage and energy transfer to raise and lower the door efficiently.
Rope is not a simple machine on its own, it's a simple machine on a wheel and axle, then it's a pulley.
It is a simple lever.
a compound machine is a combination of simple machines
lever
lever