A balanced lever has two weights on it, the first with mass #27 kg # and the second with mass #18 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 · 2017-03-29T05:46:06

The distance is #=4.5m#

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#M_2=18g N#

#a=3m#

#M_1=27gN#

Taking moments about the fulcrum

#M_1*a=M_2*b#

#27g*3=18g*b#

#b=(27g*3)/(18g)#

#=4.5m#