THE ROYAL ARTILLERY INSTITUTION, 
151 
Table XXIY. 
Number 
of experiment. 
Nature 
of material. 
IV, number of surfaces. 
B, wt. to 
overcome 
friction 
of 
motion. 
C, coeffi. of friction 
B 
of motion =p 
I, impact 
of b. 
M, motion of the 
piece 
drawn through 
in inches 
per minute. 
A, mean an¬ 
gular fall of b. 
V, velocity 
of b. 
For each 
expmt. 
j Mean. 
1 
lbs. 
lbs. 
O 
ft. 
1 
s 
699 
per sec 
247 2 
2 
689 
689 
•615 
30 
3-79 
1-5 
3 
679 
1 
1502 
248 2 
4 
1532 
1527 
1-363 
30 
3-79 
1*5 
3 
& 
1546 
bJ3 
g 
1 
2343 
249 2 
6 
2251 
2290 
2-045 
30 
3-79 
1-5 
3 
1 
2276 
1 
■fb 
S3 
2901 
250 2 
O 
£ 
8 
2901 
2947 
2-631 
30 
3-79 
6 
3 
£ 
3040 
1 
251 2 
10 
3 
Table XXY. 
1 
> 
987 
252 2 
2 
987 
994 
•887 
30 
3-79 
40 
3 
1007 
a 
1 
© 
.a 
2063 
253 2 
t i 
4 
2028 
2051 
1-834 
30 
3-79 
30 
3 
S 
2063 
© 
So 
1 
’m 
3729 
254 2 
r o 
6 
3729 
3729 
3-33 
30 
3-79 
30 
3 
I 
3729 
a 
o 
1 
.a 
5118 
- 
255 2 
T3 
a 
8 
5118 
5105 
4-558 
30 
3-79 
25 
3 
S3 
O 
5079 
& 
1 
256 2 
10 
3 
- 
