A balanced lever has two weights on it, the first with mass #3 kg # and the second with mass #4 kg#. If the first weight is # 5 m# from the fulcrum, how far is the second weight from the fulcrum?

1 Answer
Alan P.
Mar 25, 2016

#3 3/4# meters

Explanation:

Let #x# be the distance the second weight is from the fulcrum.

Since the lever is balanced
#color(white)("XXX")3kg xx 5 m = 4 kg xx x#

#rarrcolor(white)("XXX")x=(3 cancel(kg)xx5m)/(4cancel(kg))=3 3/4 m#

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