How Levers Help Us
1970 11 min
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.
Sign in to mark this movie and manage your watchlist.
1970 11 min
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.
Sign in to mark this movie and manage your watchlist.
No reviews yet. Sign in to write the first one!
