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.
39.75 lb
70.67 lb
55.78 lb

Answer 1

@mathneedy

Answer 2

@timo86m please help me

Answer 3

You should get 53*6=4.5*m,where m is the mass of Mark's friend. So, m=
53*6/4.5 = 70.67 lb to the nearest hundredth.