A balanced lever has two weights on it, the first with mass $3 kg$ and the second with mass $7 kg$ . If the first weight is $8 m$ from the fulcrum, how far is the second weight from the fulcrum?

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Answer 1 · 2017-04-19T06:32:02

The distance is $=3.43m$

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Mass, $M_2=3kg$

Mass, $M_1=7kg$

Distance, $b=8m$

Taking moments about the fulcrum

$M_1*a=M_2*b$

$a=M_2/M_1*b$

$=(3g)/(7g)*8=24/7m$

A balanced lever has two weights on it, the first with mass 3 kg 3 kg and the second with mass 7 kg7 kg. If the first weight is 8 m 8 m from the fulcrum, how far is the second weight from the fulcrum?