( ) 
Diameter muft of Confequenee have its Fridion of on- 
ly 5 1 Ounces j becaufe 
The third Pulley moving with j of the Velocity of 
the Power, on a Pin of \ of its Diameter, has for its 
Fridion 4 , — - 5 ; becaufe 
Now the Sum of all thefe Fridions being 17,6 5 
which is the 5,4 Part of the Power 6 lb, this Addition 
doesfo encreafe the Fridion as to require a Super-ad- 
dition of the j^Part of that firft Addition, and fo on, 
in this Series, 3 17 6 z -f- $,1 + °» 5'9» & — 5. 
Then the Sum of the Fridions upon account of bend» 
ing the Ropes (too tedious to explain now, before I 
give a full Account in my intended Theory of Frifti- 
on) deduced from the Experiment that a Rope of Inch 
in Diameter ftretched by 6 lb requires 4,5 5 to bend 
it round a Cylinder of 1 Inch , amounts to 
1,8 + 1, 15 ’ + 1,12.4 = 4>4M 3, which, with the 
other Friction, amounts to 1^,834 3. But as I have 
formerly fhewn in thefe tfranfaffions, that when a 
Rope drawn by unequal Weight runs over a Pulley, 
the Preffure on the Pin is dim in idled \ that diminifhed 
Preffure (found by Calculation to be near 6 5) being 
taken from the above Sum, the Fridion remaining will 
be 19:834 3 ; and the Experiment is juft zo 3. 
N. B. Nothing was here allowed for the Weight 
added to bend the Ropes, which would ftill bring the 
Experiment nearer the Theory. 
