A balanced lever has two weights on it, the first with mass #15 kg # and the second with mass #5 kg#. If the first weight is # 2 m# from the fulcrum, how far is the second weight from the fulcrum?

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Answer 1 · 2017-03-05T08:26:37

The distance is #=6m#

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Here, we have

#M_1=15gN#

#M_2=5gN#

#a=2m#

Taking moments about the fulcrum

#M_1*a=M_2*b#

#b=M_1/M_2*a#

#=(15g)/(5)*2=6m#