# Equilibrium problem

1. Dec 4, 2007

### ll Source ll

1. The problem statement, all variables and given/known data
Torque is used to determine the weight of an object. A 10.0 m long pole weighing 20.0 N has its center of gravity 2.00 m from one end. An object of unknown weight is hung at the end opposite the center of gravity. With the object hanging at this end, the pole now balances 2.00 m from the unknown weight. What is the weight of the unknown weight?

2. Relevant equations
T = F * R

3. The attempt at a solution
T = 20 * 2
= 40 ?

2. Dec 5, 2007

### Bill Foster

$$T_1=T_2$$

$$F_1 R_1=F_2 R_2$$

Solve for $$F_2$$