Shaduf
device · 2000 BC · Ancient world
A well sweep for lifting water: a lever with a counterweight.
What it is made of
- Wooden post — has part. The post is the fulcrum of the lever.
- Balance beam — has part. A long pole acting as a lever.
- Counterweight — has part. A weight on the short arm makes lifting the bucket easier.
- Wooden bucket — has part. It scoops up water.
Principles and materials it uses
- Lever — uses. A shaduf is a lever with a counterweight.
- Counterweight — uses. The counterweight makes lifting the bucket easier.
- Wood — is made of. The sweep of a shaduf is a wooden pole.
Where it is used
- Irrigation — is used in. The shaduf fed water into the canals.
- Well — is used in. Or with a well sweep.