Technology
How does an elevator work?
An elevator works by using a motor and a counterweight to raise and lower a car along guide rails. Steel cables connect the car over a pulley to a heavy counterweight, so the motor only needs to move the small difference in weight — making lifting efficient.
See it in motion.
Watch a 2-minute animated lesson that shows exactly how an elevator works.
Step by step
- 1The car hangs from steel cables running over a pulley at the top.
- 2A counterweight on the other side balances most of the car's weight.
- 3A motor turns the pulley to raise or lower the car.
- 4Because the load is balanced, the motor uses far less energy.
- 5Multiple cables, brakes, and safety catches prevent falling.
Frequently asked questions
- How does an elevator move up and down?
- A motor turns a pulley that raises or lowers the car on cables, with a counterweight balancing most of the load so little force is needed.
- What stops an elevator from falling?
- Multiple strong cables, automatic brakes, and safety clamps grip the rails if the car ever moves too fast — falls are extremely rare.
- Why do elevators have a counterweight?
- It offsets the car's weight so the motor only moves the difference, making the system far more energy-efficient.