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9 August, 13:31

Since a kilogram of feathers and a kilogram of lead have the same mass, how do they appear different and why?

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  1. 9 August, 14:02
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    They do have the same mass. However, "Heavy" implies we are concerned with how much force it takes to lift the object. In this case, we will find that the force needed to lift a kilo of feathers in air is slightly less than that needed to lift the kilo of lead.
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