Example 10.3 Two pounds of potatoes are being weighted with a balance, the counter
weight on the balance is 0.5 lb. If the balance arm from the potatoes to the fulcrum is
6 in long, how far from the fulcrum must the counter balance be placed?
2 lb × 0.5 ft = 0.5 lb × d ft
d = 2 × 0.5/0.5 = 2 ft