Second-class Lever Small 320×75 Medium 640×149 Large 1024×239 Download Tiff Original 2400×560 | (115.6 KB) Description "Two men carrying a load between them on a pole is also and example of this [second class] kind of lever. Each man acts as the power in moving the weight, and at the same time each becomes the fulcrum in respect to the other." -Comstock 1850 Keywords class, fulcrum, lever, second Galleries Levers Source: J. L. Comstock A System of Natural Philosophy: Principles of Mechanics (: Pratt, Woodford, and Company, 1850) 74
