# A balanced lever has two weights on it, one with mass #1# #kg# and one with mass #8# #kg#. If the first weight is #9# #m# from the fulcrum, how far is the second weight from the fulcrum?

##### 1 Answer

May 20, 2017

#### Answer:

The

#### Explanation:

For the lever to be balanced, the torque on each side of the fulcrum must be balanced.

The torque due to the first weight is given by

The torque due to the second mass must have the same value:

Rearranging to make

This is as we would expect: a larger mass needs to be closer to the fulcrum to balance a smaller mass further from the fulcrum.