C *1 1 
Experiment II. 
If the fame Prop of five Inches is plac'd under a 
Point in the Bar at 30 Inches from the Centre of Mo- 
tion, the Power or PreiTure will be 8 Ounces, i 2 Dwt, 
1 3 Grains > and the Fridion equal to 2 Dwt, 2 1 Grains. 
The Foot of the Prop is to be diftant from the Centre 
of Motion 29 Inches -^- 0 . 
Second Case, 
In which the Brop is perpendicular to the Bar , ex- 
emplified by three Experiments . 
Experiment L 
Now let the Prop (ftill five Inches long) be plac'd 
fo as to be perpendicular to the Bar in a Point it 
Inches diftant from the Centre of Motion. Here the 
Power exprefiive of the Preflure fhould be 19 Ounces, 
18 Dwt, 4* Grains, and the Fridion 6 Dwt, if Grains* 
but on account of a Corredion neceflary to be made 
to this, (becaufe the Bar is thick as well as heavy, and 
the Centre of Gravity above the Surface to which the 
Prop is applied) the Power or Preflure fuftained will 
be only 19 Ounces, if Dwt, f Grains, and the Fric- 
tion 6 Dwt, 14 Grains. 
N. B. The Diftance of the Foot of the Prop In this 
Cafe is 1 3 Inches from the Centre. 
Experiment II. 
The Prop here is 10 Inches long, (ftill perpendi- 
cular to the Bar) under a Point in the Bar, 24 Inches 
diftant from the Centre. The Power equal to the 
Preflure fuftain'd fhould be (if the Bar was only heavy, 
I and 
