SYSTEM OP PULLUSS. 1 *'J 



' /> 



Of 



ion of the l.,t .tring -fzzfr. 



is equal to 1 



-2 C080 t C08a t C087 i ...C080.. 



>M r/ M potcvr am/ 

 i of pull le* where the some striny po*$e round all the 



\e$. 



u consists of two blocks, each cont 

 numU-r : lies with their axes coincident '!' 



is BUSpCU' i the lowi-r llu!. 



the i loose t 



passes re allies of the upper :. 



block alt. 



.same string passes round all the pullios, its 

 e everywhere toe same, and equal to the power 







block; thru /< . J' will i their tensions; therefore 



JT-ft. 



i to account the weight of the lower block, and 



call i: 



TF+ Bn. 



'3 at the lower block arc not vertical, we must 

 take t of the parts rcao! ically, aiul equate it to 



in general this deviation from the vertical is so 

 : that it : 



