mar7aba,
i read that what Galelio made was right...he took 2 masses, the first was 1 "ratel", the second one was 10 "ratel", and he did the that coz he thought the all the objects falls in the same acceleration, thats mean they will reach the ground at the same time, inspite of their masses....
in that time, every one think that that was wrong, because Aristo said that there is a connection with the masses, so Galelio gathered all the pupils and the teachers in Piza and made that thing....
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