Answer:
40 inches
Step-by-step explanation:
<h3>Left side of seesaw:</h3>
Woman + sit = 145 lb + 5 lb = 150 lb
Distance from the fulcrum to the left side = 60 in
<u>Moment of the force on the left side:</u>
<u />
<h3>Right side of seesaw:</h3>
Son + sit = 95 lb + 5 lb = 100 lb
Distance from the fulcrum to the son's seat = 60 in
<u>Moment of the force:</u>
Daughter + sit = 70 lb + 5 lb = 75 lb
Distance from the fulcrum to the daughter's seat = x
<u>Moment of the force:</u>
Since left and right sides are balanced, moments should be equal on both sides.
<u>This is shown as:</u>
- 75x+6000= 9000
- 75x= 3000
- x= 3000/75
- x= 40
So, the daughter should sit at 40 in distance from the fulcrum.
