A balanced lever has two weights on it, the first with mass #15 kg # and the second with mass #9 kg#. If the first weight is # 6 m# from the fulcrum, how far is the second weight from the fulcrum?

1 Answer
Munu
Jul 1, 2016

10m

Explanation:

The torques balance each other. therefore,
#r_1xxF_1=r_2xxF_2#
#F=m*g#
#m_1*g*r_1=m_2*g*r_2#
#15xxgxx6=9xxgxxr_2#

Solving this equation we get #r_2=10m#

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