A balanced lever has two weights on it, the first with mass #5 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?

1 Answer
May 1, 2016

Answer:

#x=2.5m#

Explanation:

First of all remember that the principle of moments must apply which is the anticlockwise moment=clockwise moment.
Now use the formula #F*d=F*d#
but before that convert the masses into weight by multiplying by 10
which is the gravitational force so
#5*10=50N#
#8*10=80N#
no using the formula
#50*4=80*x#
#x=2.5m#