On 31/10/2011 stev_e wrote:
>oh yes, redoing my calculations now comes to 5:1 thanks
Easiest way to work out multiplys is to imagine the person goes up 1 metre ,then work out how much rope ends in the haulers hand , here one metre rise ,bottom pulley will go up one metre (2 metres of rope )and top pulley down one metre (2 metres of rope )
1+2+2=5 metres hence advantage is 5 to one |