permisi para fisikawan indonesia,
saya mau nanya nih. 
jika saya punya 2 buah benda yang beratnya masing masing 200 kg dan 300 kg, 
serta saya memiliki besi datar sepanjang 5m sebagai alas untuk benda tersebut , 
dimana saya harus meletakkan poros timbangan ?
rumusnya gimana ya ?

Trims.



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