Making a small pulley showcases how a pulley system works and what it can be used for. Constructing a pulley is a way to model a Science lesson or create an after-school project to complete with children. Making a pulley requires simple household items and no more than thirty minutes of your time.
Things You'll Need
- 8-10 inch length of wire - about the gauge of paperclip wire or smaller
- Wooden thread spool
- Needle nose pliers
- Cabinet handle or wall hook
- 12- to 15-inch length of string
- Paper clip
- Pencil or other small object
Place the wire through the wooden spool. Use a gauge of wire that allows the spool to spin.
Bend the wire into a triangular shape and twist the ends together using needle nose pliers.
Attach the spool to a secure location by hanging the wire on a fixed object such as a cabinet handle or wall hook.
Place the string over the spool. Tie a paper clip to one end of the string and tie the other end around a small object such as a pencil.
Pull the paper clip. The spool should slowly turn, raising the pencil or small object.
- Photo Credit pulley of a boat image by timur1970 from Fotolia.com
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