16 years ago
that I pull the rope down is equal to the distance that the weight is
lifted then I am lifting 100kg, right.
But now if I am tied to a rope which is looped over a pulley and I pull
on the other end of the rope to lift myself (with the same 1:1
mechanical advantage as before) then am I still pulling 100kg? I am
thinking that I am now pulling 50kg... is that correct?