Pulley
Описание на Статията
New Innovations - Pulley | The pulley is a wheel which forms part of a machine that can be used to make lifting heavy objects easier. Its mechanical advantage is equal to the number of wheels used.
Текст на Статията
- PULLEY The pulley is a wheel which forms part of a machine that can be used to make lifting heavy objects easier. Its mechanical advantage is equal to the number of wheels used.
Над 30 милиона създадени разкадровки