THE ROYAL ARTILLERY INSTITUTION. 
153 
Series d. Table XXVII, 
EFFECT OF VARYING THE PRESSURE ON THE SAME EXTENT OF SURFACE. 
8=32 square inches. 
Statical friction, or friction of rest (i.e, without the use of impact)» 
a> 
a 
O 
a 
B, wt. to 
d 
Dvna 
fricl 
mical 
m 
m 
gn 
overcome 
*J IPs 
M, motion of the 
Ion. 
d 
u § 
“Ph icq 
friction 
•g II 
or friction of 
rO -S 
d 8 
R -B 
Cw 
p. II 
of 
£ S 
piece 
motion, see 
s s 
O 
motion. 
o .2 
drawn through 
Table XVII. 
d 
fc S 
1 
o 
in inches 
per minute. 
d d 
m *»h 
For each 
expmt. 
Mean. 
m 1 
p. 147. 
o 
i 
B." 
O 
£-4 
P 
£ 
8 o 
o' 
O. 
M. 
tons 
lbs. 
lbs. 
lbs. 
1 
557 
257 
2 
0*50 
35 
617 
566 
•505 
•334 
3 
524 
1 
781 
2 
880 
258 
3 
075 
52-5 
746 
845 
•503 
•333 
4 
905 
5 
914 
1 
1266 
259 
2 
1-00 
70-0 
1228 
1268 
•562 
•403 
o3 
3 
•s 
1217 
6 
"i 
4 
o 
1321 
d 
.§ 
1 
•a 
1440 
■jjj 
a 
2 
§ 
1564 
53 
260 
3 
4 
5 
1 
> l 
d 
1 
1*25 
87*5 
1436 
1405 
1336 
1614 
1436 
•513 
a> 
P. 
8 
rH 
■S 
o 
•376 
P4 
b 
i— i 
1 
261 
2 
3 
■-c 
d 
1*6 
105 
1405 
1604 
1590 
•473 
•334 
9* 
C3 
4 
O 
1544 
00 
& 
5 
1783 
1 
1753 
2 
1857 
262 
3 
1-75 
122*5 
1753 
1788 
•457 
•322 
4 
1788 
1 
2023 
263 
2 
2-00 
140 
1959 
2038 
•455 
•320 
3 
2093 
4 
2078 
Table XXVIII. 
1 
- 
d 
634 
i 
2 
2 
538 
§ 
264 
3 
4 
1 
050 
35 
652 
637 
594 
•530 
a3 
d 
•331 
1 
5 
1 
l 
607 
1023 
1 
a3 
P4 
2 
988 
53 
b 
265 
3 
* "o 
1 
0-75 
52-5 
954 
975 
•580 
Pi 
•343 
43 
d 
4 
988 
1 
o 
.Q 
5 
d 
920 
43 
d 
1 
d 
1231 
d 
o 
$ 
d 
266 
2 
TS 
1-0 
70 
1336 
1317 
•588 
•329 
3 
JS) 
1365 
d 
4 
d 
o 
1336 
<D 
£ 
