- #1

Peach

- 80

- 0

## Homework Statement

A worker lifts a weight w by pulling down a rope with a force F. The upper pulley is attached to a ceiling by a chain, and the lower pulley is attached to the weight by another chain. The weight is lifted at constant speed. Assume the chain, rope, and pulley all have negligible weights. In terms of w, find the magnitude of force F if the weight is lifted at constant speed.

## Homework Equations

F=ma where a=0

## The Attempt at a Solution

Okay, so I made a fbd again. This time I'm confused about the tensions, I'm not sure if it is pointed up or down, for both of the chains. So far, I have the weight pointed down, F is down, and both tensions are up (I assume that tension is up...but I'm not sure). With that, my equation is

F = -w+2T where I substitute T with w.

Can someone pls explain to me about tension? Many thanks in advance.