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A system of pulleys is used to lift an elevator that weighs 3900 newtons. The pulley system uses 9 ropes to support the load. How far would 10700 joules of input work lift the elevator? Assume the pulley system is frictionless.

w=fd

f=ma

w=mg

w=fd

10700=fd

and so i tried to solve for f using f=ma...i found m using w=mg (3900=m*9.81=397.55) but we're not given the acceleration so i'm stuck!

## Homework Equations

w=fd

f=ma

w=mg

## The Attempt at a Solution

w=fd

10700=fd

and so i tried to solve for f using f=ma...i found m using w=mg (3900=m*9.81=397.55) but we're not given the acceleration so i'm stuck!

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