Question

A balanced lever has two weights on it, one with mass `5 kg` and one with mass `20 kg`. If the first weight is `9 m` from the fulcrum, how far is the second weight from the fulcrum?

Answer 1

`x=2.25m`

Explanation:

First of all convert the masses into weight by multiplying them with the gravitational force which is 10
`5*10=50N`
`20*10=200N`
now use the formula `moment=F*d`
Also apply the the principle of moments which is the anticlockwise moment=clockwise moment
so `F*d=F*d`
`50*9=200*x`
`450=200x`
`x=2.25m`