derivation of tension ratio for pulley

[daithimcc]

Can anyone please point me to a derivation of the tension ratio:
For belt drives use

T2/T1=e^(mu*beta)

where

T2 = tight side tension = load + T1
T1 = slack side tension

mu = friction coefficient
beta = wrap angle in radians

Thanks

 

[desertfox]

Hi daithimcc

Try this website:-

http://www.mech.uwa.edu.au/DANotes/V-belts/intro/intro.html#top

regards desertfox