Pulleys are Cool
Ever wonder how NASA gets the space shuttle on top of a 747? They use pulleys!
License: Creative Commons BY-NC-SA
More information at http://k12videos.mit.edu/terms-condit...
Ever wonder how NASA gets the space shuttle on top of a 747? They use pulleys!
License: Creative Commons BY-NC-SA
More information at http://k12videos.mit.edu/terms-condit...