If I have a rod,made of some metal,what experiment should I perform to check whether or not the mass is evenly distributed in the rod i.e how to check whether it has the same density all over?
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If the rod is not too heavy, you might use two fingers and move them into the middle to evaluate wheter the geometrical center is the same as the center of gravitiy. The mass is evenly distributed, if your fingers meet in the middle and if you are able to balance the rod there.
mss
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If this had to be done, I would design a lead shield/collimator apparatus such that I could take a neutron source and measure the neutron flux with and without the rod between apparatus and neutron detector. Measure these at 1 cm steps along the length of the rod. The ratio of neutron flux with and without rod should be constant.
Natsfan
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