213
THEORY AND PRACTICE
TRACT 37 ,
17. Table of the Air's Resistance to a Ball of 2 inchesDiameter.
Veloc.per sec.in feet.
Resist-by exper.
Resist- bytheory.
Ratio ofexpos, totheory.
Resist, asthe pow-ers of theveloc.
Resist-ances inlbs.
feet
oz
oz
5
0-006
0-005
1'20
10
0-026
0-021
1-23
15
0-058
0-046
1-25
20
0-103
0-082
1-26
25
0-163
0-128
1-27
30
0-237
0 - 184
1-29
40
0-427
0-329
1-30
50
0-676
0 - 511
1-32
100
2-78
2-046
1-36
0-174
200
11-84
8-18
1-39
2-028
0-709
300
25'8
18-4
1-42
2-028
1-612
400
46-5
32-7
1-43
2-032
2-906
500
74-4
502
1-46
2-042
4-650
600
110-4
73-6
1-50
2-055
6-900
700
156-0
100-2
I "55
2-069
9-750
800
2120
130-9
1-62
2-084
13-250
900
280-3
165-7
1-69
2-099
17-519
1000
362-1
204-6
1-77
2-115
22-625
1100
456-9
247-6
1-84
2-128
28-556
1200
564-4
294-6
1-91
2-138
35-275
1300
683-3
345-7
1-98
2-146
42-706
1400
811-5
401-0
2-03
2-151
50-719
1500
947-1
460-1
2-06
2-153
59-194
1600
1086-9
523-7
2-08
2-152
67-931
1700
1228-4
591-2
2-07
2-150
76-775
1800
1368-6
662-8
2-06
2 - 14.5
85-537
1900
1505-7
738-5
2-03
2-141
94-106
2000
I 63 T 8
818-3
2-00
2-136
102-362
18. In the first column of this table are contained theseries of velocities, to the ball of 2 inches diameter, fromthat of 5 feet up to 2000 feet per second of time; and in the2nd column are placed the correspondent resistances, ex-pressed in avoirdupois ounces and decimals. For the pur-poses of comparison, in the 3rd column are placed the cob-