A balanced lever has two weights on it, the first with mass #4 kg # and the second with mass #30 kg#. If the first weight is # 7 m# from the fulcrum, how far is the second weight from the fulcrum?

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Answer 1 · 2017-10-25T07:07:29

The distance is #=0.93m#

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The mass #M_2=4kg#

The mass #M_1=30kg#

The distance #b=7m#

Taking moments about the fulcrum

#M_1xxa=M_2xxb#

#a=(M_2xxb)/(M_1)=(4*7)/30=14/15=0.93m#