( 1 18 ) 
ded to V, as u , the Weight V will overpower, and that 
as much at V as if it was at W. 
From what we have faid above, the Reafon of this 
Experiment will be very plain. 
As the Lines A C and K D, C B and K E al ways 
continue of the fame Length in any Pofition of the 
Machine, the Pieces A D and B E will always con- 
tinue parallel to one another, and perpendicular to 
the Horizon : However, the whole Machine turns up* 
on the Points C and K j as appears by bringing the 
Balance to any other Petition, as a b e d : And there- 
fore as the Weights applied to any Part of the Pieces 
F G and H I can only bring down the Pieces A D 
and B E perpendicularly, in the fame Manners as if 
they were applied to the Hooks D and E, or to Xand 
Y, the Centers of Gravity of A D and B E j ( the 
Force of the Weights (if their Quantity of Matter is 
equal) will be equal j becaufe their Velocities will be 
their perpendicular Afcent or Defcent, which will al- 
ways be as the equal Lines 4 l and 4 L, whatever 
Part of the Pieces F G and H I the Weights are ap- 
plied to. But if to the Weight at V be added the lit- 
tle Weight u, thofe two Weights will overpower, be- 
caufe in this Cafe the Momentum is made up of the 
Sum of V and u multiplied by the common Velocity 
4 L. 
Hence follows, that it is not the Diftance c 6 mul- 
tiplied into the Weight V, which makes its Momen- 
tum j but its perpendicular Velocity L 4 multiplied 
into its Mafs CL E. D. 
This is ftili further evident-, by taking out the Pin 
at Kj for then the Weight P will overbalance the 
other 
