Math Question - Urgent! #36

Question

Mr. Swanson needs to move a 3S0-pound refrigerator. He has no dolly, so he gets his son to help balance the refrigerator while he slides a 6-foot board under it and uses a block as a fulcrum. (This enables him to get a rug under the refrigerator on which it will slide.) If the fulcrum is 18 inches from the end of the board, how much force is needed to raise the refrigerator~

Answer 1

Using a fulcrum, the distance from it X the 350 lbs = the distance from it on the other side X ???lbs.

18" = 1.5' and 6-1.5' = 4.5'

4.5x = 350(1.5')

x = 350(1.5)/(4.5) = 350/3 = 116 2/3 lbs.is required to move the refrigerator,