# 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  3 m from the fulcrum, how far is the second weight from the fulcrum?

Jan 31, 2016

2.25m

#### Explanation:

for Blance, we know,

${M}_{2} / {M}_{1} = \frac{A}{B}$

suppose, B= $x m$

so,

$\frac{4 k g}{3 k g} = \frac{3}{x}$

$\mathmr{and} , x = \frac{3 \times 3}{4}$

$\mathmr{and} , x = 2.25$