301 OF ENGINEERING FORMULÆ.
Table fok the Conversion of British (foot-grain-second?
System to Metrical (metre-gramme-second) System.
No. of Metrical I Units contained in a British 1 Unit. Log. Log. No. of British Unite contained in a Metrical Unit.
1° for M .. O’ 0647989 2’8115678 1 ‘ 1884321 15’43235
2° for L, p R, ) 0’3047945 1-4840071 0'5159929 3-280899
i.and V .. 1 r ■ 3° for F (also j for foot-grains ( 0'0197504 2 •2955’749 1-7044250 50-6320
and metre- ? grammes .. J 4° for W .. 0’0060198 3‘7’795820 2-2204179 166-1185.
5° for H and 1 electrochem- ( 0'461085 ■ I'663T804 0-3362196 2-16880
ical equiva- ? lents . , * 6° for Q,C, ande 0-140530 T-14T7874 0-8522125 7-11561
7° for E> m, <£,•(_ and c .. .. 5 0-0428346 2'6317949 1-3682051 23'3456 :
8° for heat .. 0'0359994 2-55629531-4437046 27 • 7782
Bbitish System.
RELATION BETWEEN ABSOLUTE AND OTHER UNITS.
One absolute fforce _n. 0310666 °^a grain) in
unit of (work — foot-grains j London
In London (weight of a grain = 32.1889 absolute (force,
(one foot-gram units of (work.
One absolute /force __ 1 (unit weight ) every-
unit of (work ~ g (unit weight x unit lengthj where
g in British system = 32’088 (1 + 0-005133 sin.2 Å), where
Å = the latitude of the place at which the observation is made.