Use the Law of the Lever to solve the following. Mark sits 4.5 feet from the center of the seesaw to balance a friend who weighs 53 lbs and is sitting 6 feet from the center. How many pounds does Mark weigh? Round to the nearest hundredth.

Question

Use the Law of the Lever to solve the following.  Mark sits 4.5 feet from the center of the seesaw to balance a friend who weighs 53 lbs and is sitting 6 feet from the center.  How many pounds does Mark weigh?  Round to the nearest hundredth.

radar · Answer

Let x = Mark's weight.
4.5x=6*53
4.5x = 318
x=70.666666lbs