# A balanced lever has two weights on it, the first with mass #42 kg # and the second with mass #14 kg#. If the first weight is # 2 m# from the fulcrum, how far is the second weight from the fulcrum?

##### 1 Answer

Did you know you can treat units of measurement the same way as numbers? I have shown this in my solution.

#### Explanation:

For the system to be in equilibrium (not rotating or moving in any way) all the 'moments' have to cancel each other out.

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Equating LHS to RHS for equilibrium gives:

Remember that the units for

Divide both sides by

So