In fig. 8-6 for example, there are two parts at the moving block, therefore the mechanical advantage is two; in other words, a pull on the hauling part of 1 cwt would, if friction were disregarded, hold a weight of 2 cwt, Friction, which occurs in the bearings of the sheaves and in the fall as it bends round the sheaves, reduces the mechanical advantage considerably; this loss through friction is explained on page 219.
Kumboniso -8/6 umezekelo, kukho indawo ezimbini kujikelezo lovingco, ngako 'oko uncedo lomatshini sisibini, ngamanye amazwi udontso kwindawo yotsalo ye (1) cwt lunga, ukuba uhlikihlo lungaangananzwa, bamba ubunzima be 2 cwt,, uhlikihlo, ukuba lungenzeka kwinkumbulo yeeshivs nakuwo kungagoba lujikileze ishivs, lunyusa uncedo lomatshini, olulahleko phakathi kohlikihlo olulaciswe kwiphepha -219.