SOLUTION: Philip, Joshua and Peter weigh 50, 85 and 120 lbs. respectively and use a 12 ft. plank for a teeter board. philip sits 5 ft. Joshua sits 4 ft. and Peter sits 3 ft. from the fulcrum
Question 1124464: Philip, Joshua and Peter weigh 50, 85 and 120 lbs. respectively and use a 12 ft. plank for a teeter board. philip sits 5 ft. Joshua sits 4 ft. and Peter sits 3 ft. from the fulcrum on the same side. How far must a 200- pound friend sit from the fulcrum to balance them? Answer by ikleyn(52803) (Show Source): You can put this solution on YOUR website! .
The equation is
50*5 + 85*4 + 120*3 = 200*x.
950 = 200x ====> x = = 4.75 ft
Answer. 4.75 ft.