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        Grades

        6-12

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        Stream Only


        Part of NOVA
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        Lever an Obelisk

        This interactive activity from NOVA challenges users to lift one end of an obelisk to a height of three feet using only a lever, a fulcrum, weights, and some supporting stones. Levers are one of the oldest simple machines designed by humans. They enable very heavy objects to be lifted with considerably less human force by increasing the distance over which the force is exerted.

        Visit the program page here.

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