A majorette fastens two batons together at their centers toform an X shape. Each baton consists of an extremely light 1.2-m bar with small0.25-kg balls at each end. What is the moment of inertia of this baton about anaxis through the center of the X?

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Answer(a)   the matererials that are in contact, the two materials and the nature of their surfaces/// (b)/// the force pushing the two surfaces together, pushing the surfaces together causes the more of the asperities to come together and increases the surface area in contact with each other