In article , Gary Coffman says...

Ok, the feathers and lead are hanging from the opposite arms
of a balance. Which side goes down? Better?

OK the balance that has both is in air, right?

But how did you determine the original 1 metric ton
number? If you put each of the items on a scale,
in air, and added or subtracted lead/feathers until
the number said "one" each time, then the
balance will stay zeroed when you compare the
two directly.

Jim

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