A pulley is a simple machine using a wheel and a cord that's designed for lifting. A pulley is a simple machine using a wheel and a cord that's designed for lifting. Pulleys help make work easier by ...

Whether your goal is looks, efficiency, or merely getting your engine running, pulleys are critical parts, and there are important factors that need to be considered when selecting them. If you're ...

But now the staff can get that bag to the customer on a pulley system that increases distance and reduces contact between people. Jamal Johnson, far left, a senior at St. Augustine High School, places ...