How do pulley equations relate distance and angles to lifting power?

[tony two takes]

Hello,
Im looking to pay around with some pulley equations amount distance and angles and how they alter the pulley lifting power, if anyone could post them or point me in the write direction

 

[Nugatory]

You will get better and more helpful answers if you start with a google search, see what's already out there, then come back and ask here if you have more specific question about what you've found.