Museo Galileo
Virtual Museum
Third-order lever
    • Setting:
      Room XII
    • Maker:
    • Date:
      second half 19th cent.
    • Materials:
      wood, brass, lead
    • Dimensions:
      600x160x700 mm
    • Inventory:
    • Third-order lever (Inv. 1008)

Third-order lever inspired by a model proposed by Willem Jacob 's Gravesande in Physices elementa mathematica, experimentis confirmata (3rd ed., Leiden, 1742). There is a beam with two notches and three evenly spaced nails showing the points where the effort could be applied. The effort consists of a pan connected to the beam by a cord passing on a pulley. A second pan hanging from one end of the beam represents the load. Provenance: Lorraine collections.