A balanced lever has two weights on it, the first with mass #4 kg # and the second with mass #2 kg#. If the first weight is # 3 m# from the fulcrum, how far is the second weight from the fulcrum?

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Answer 1 · 2017-11-10T07:08:06

The distance is #=6m#

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The mass #M_1=4kg#

The mass #M_2=2kg#

The distance #a=3m#

Taking moments about the fulcrum

#M_1xxa=M_2xxb#

#b=(M_1xxa)/(M_2)=(4*3)/(2)=6m#

The distance #b=6m#