A balanced lever has two weights on it, the first with mass #6 kg # and the second with mass #8 kg#. If the first weight is # 4 m# from the fulcrum, how far is the second weight from the fulcrum?

Question

1369 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-06-23T18:32:21

The distance is #=3m#

commons.wikimedia.org

The acceleration due to gravity is #g=9.8ms^-2#

The mass #M_1=6kg#

The mass #M_2=8kg#

The distance #a=4m#

Taking moments about the fulcrum

#M_1gxxa=M_2gxxb#

So,

#6gxx4=8gxxb#

#b=(24g)/(8g)=3m#