202
EXPERIMENTS WITH
TRACT 36.
Angle
with
horiz.
Actu-
ating
wts.'
Timeof 1revol.
Veloc.
pri-
son.
Diffs.
of
wts.
Resist,to 12 ft.veloc.
Ditto
reduced.
Ratioto thelast.
Sinesof theangles
0°
oz
10
sec'
2*50
feet | oz
1 1 -25 1 0
oz
0
oz
0
0
0
5
10^2-6710||2-43" j 2 ! 2-50
10-54
11 • .5 S
fl -25”
0-81
■016
19
87
10
2
2-28 | -044 | 52' 1 173
20
15
16
2-73 | 10-312-50! 11-25
b
6
6-34
•133
158
342
30
24
26
.28
2-37
2-26
2-.I9
1 1-8712-4512 85
14
16
J 8
14-31
■ -278
331
500
40
32
34
36
2-40
2-30
2-26
11- 72
12- 2312-45
22
24
26
23-09
•448
533
643
50
89
40
41
2-40
2-39
2-38
11-7211-7711-S3
29
30
31
31-34
•609
724
766
60
43 | 2'50
11 -25
88 | 37-60 | -730 | S68 | 866
70
44
4.5
2 582-55
10-91
11 -04
34
35
41-49
•805
957
910
80
46
47
2-60
2-52
10-88
11-14
St)
87
43-03
•836
994
985
90 I 48 |2'50 1 11-25
38 | 43-35 1 -841 |lO00 |1000
1 j 2 | 3 | 4 | 5 | 6 | 7 i 8 | 9
52. Having, by the mediums of several trials, found thetimes corresponding to each revolution, in the 3rd columnof this table, corresponding to the weights in the 2nd co-lumn, and angles of inclination in the first column; the cir-cumference of revolution, viz, 28^- feet, being divided bythese times, gives the velocity per second, as placed in the4th column.
Then the first weight, of TO oz, when the very thin edgeof the plane only was opposed to the air, being deductedfrom every weight in the 2nd column, leaves the weights inthe 5th column, which are to be considered as the actuatingweights at the barrel of the axis, very nearly.