SimilarFilm
How Levers Help Us (1970)
11 minDocumentary
This instructional film shows the three parts of a lever and demonstrates how various levers help to move things more easily, or move them farther and faster.
Country: United States
Keywords
Plot:science
This instructional film shows the three parts of a lever and demonstrates how various levers help to move things more easily, or move them farther and faster.
Country: United States
