- #1

alex7298

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**Test Review help!**

## Homework Statement

Two children whose masses are 35kg and 55kg are on a playground "teeet totter" which is 3.0m long. Where must the fulcrum be placed so that the children will balance?

(35kg on left, 55kg on right)

## Homework Equations

sum of T=0

## The Attempt at a Solution

I started with T=0=F(left)L(left)-F(right)L(right)

The two lever arms must add to be 3.0m so L(left)=3.0m-L(right). Through some algebra i got the equation into terms of L(right):

L(right)=(3m)(Fleft)/(2(Fright))

I get the right lever to be .95m, but is supposed to be between 1-1.5

Where am i going wrong??

Thanks