Answer: 30 meters
Explanation:
In this case, the mechanical advantage (MA) is given as 3, and you want to lift the boulder 10 meters off the ground. Let
x represent the distance you have to pull the rope.
3
=
10
3=
10
x
Now, solve for
x: =3×10
=
30 meters
x=3×10=30 meters
So, you would have to pull the rope a distance of 30 meters to lift the boulder 10 meters off the ground in a pulley system with a mechanical advantage of 3.