Re: free and fixed pulley


Bouwman wrote:
> hi guys,
> Consider the well known system of one fixed and one free pulley.
> A weight on the free pulley.
> I know that my pulling force is half the force of gravity on the
weight.
> Why that is I understand.
> What I do not get is why i have to haul in twice as much rope
compared
> to the change in height of the weight.
>
> My suspicion is that it has something to do with the cycloid. Because

> the free pulley rols upwards. I checked the formulas but I could not
> find a factor 2.
>
> thanks in advance, Peter

Look at the load bearing wheel as a wheelbarrow with string handles.

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