T
TheTreeSpyder
Guest
http://mytreelessons.com/Flash/forces/forcesPulley_1.swf
Animated Calculator / toy for forces lifting/holding/lowering on pulley at various degrees/loads.
Grid shows Black supporting line tension, Red how much of that line tension is to support of pulley, and Blue percentage of line tension pulling across to other leg of line( for line tension not working on support of load).
Same math applies to hosting by by hook etc. So, if lifting a crate with angled slings, this would show the tension of the slings, and the potentially crushing force across the top of the crate etc.
Also, Sweating/Swigging lines tighter, same math, guy wires etc.
Biggest thing here is not exact numbers, but patterns of changes, impact of changes, at what points are what forces working for and against you, to what levels of trade off. At what points do you want to input pull on end of line and receive output at bend/pulley, and at what angles would that put you 'upside down' / getting less output than input, so would reverse strategy and pull at bend/pulley to get leveraged return at intersection of Black & Blue.
Glad to see y'all still rocking and rolling!
Animated Calculator / toy for forces lifting/holding/lowering on pulley at various degrees/loads.
Grid shows Black supporting line tension, Red how much of that line tension is to support of pulley, and Blue percentage of line tension pulling across to other leg of line( for line tension not working on support of load).
Same math applies to hosting by by hook etc. So, if lifting a crate with angled slings, this would show the tension of the slings, and the potentially crushing force across the top of the crate etc.
Also, Sweating/Swigging lines tighter, same math, guy wires etc.
Biggest thing here is not exact numbers, but patterns of changes, impact of changes, at what points are what forces working for and against you, to what levels of trade off. At what points do you want to input pull on end of line and receive output at bend/pulley, and at what angles would that put you 'upside down' / getting less output than input, so would reverse strategy and pull at bend/pulley to get leveraged return at intersection of Black & Blue.
Glad to see y'all still rocking and rolling!