# A balanced lever has two weights on it, the first with mass #12 kg # and the second with mass #4 kg#. If the first weight is # 7 m# from the fulcrum, how far is the second weight from the fulcrum?

##### 2 Answers

Jan 14, 2018

The distance is

#### Explanation:

The mass

The mass

The distance

Taking moments about the fulcrum

Jan 14, 2018

#### Explanation:

the lever is balanced, meaning that the moments on either side are equal.

the moment is the force of the weight multiplied by the distance of the weight from the fulcrum.

moment (Nm)

the moment of the weight with mass

note:

weight (in newtons) = mass * gravitational field strength (~9.81)

mass

mass