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DESIGN FOR AN APPARATUS TO

DETERMINE MOMENT OF ENERTIA

OF IRREGULAR SOLIDS BY LMMERSION
R. L. Reynolds.

 

 

 
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Design for an Apparatus to Deteriine Monext of

Inertia of Irregular Solids by Immersion.

* Lea Ae sew be “ a4 . . 7 cee wee 1d ™~! = - ye Ae
ig Cmeaamte tile Sosivatile to know the maant 25 bnevoeis

ewe i #
* - - tone, re men ant yt . we . a ot
Of ivresulay Dieses, aid, altho voowre Ls Sear ool peta’ Por cen
Nae) - 2 we - .

ne. e = -_e . = . . . .3 ew “ . - a eN ge . Ce rw st ae + a 4 °
termining tnis,it is se tedicis as to be vllest uselecs. he sethog bb

“Co
; = 9. os 7-4 o's : ad 7A = Ty 7 yp - we ad. 8 my r\Or ~
on is clnired to be a vory close sa Mondimation ana with vroper

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Vay ena aor ey liestior.
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In 1LoO+t Meserms. Simons m..d Pag’ weote a thesis on the thoa
‘ vw ~) _ -, my Nea - . . Aw tor 4-1 19% my > TP > 7 aN N?wO € od ” sy UG te “} 97
5 ar. OF. Ca Uke oe wo -.s 4 6 1 .- flo LLOU > ao + S! NCC ial ay Marx Ca Lus a O77 ain: we “9 Ly o
v
-~7 7 244 > ” wa. tr. -. 1 + - ~ ~ ope) dt os - ia / — q
| Woiien they Your tiniy it was ocorrest to Whltiti oe Der sent as comourec
4
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to an exact er cal method.
Tyr et a os tee A. ee ) a7 . - A. o mm $* os +3 -
Tris test demonstrated clear Fe Goprreswiess of tie metyuod,
- A7 4 4 ar wary . f “4 - 5 4 . 7 ; 7 v4 or qT . ns 4.
but iv: orger to meke it valuable it must be easily anvlicabtie; and to
f - ;
. me = 4 “le * + -4- ~a ~.? w+ - a- ayes san Se -.-
aucG@Mislist: this it Ppequirel si..°7 means of Panidly dint tne viece about
- =e wo Ts 4 -] s - e 5 ye ~~ ™, noe “~ . 77 dn ™, f + -™ 7 . . a . -.- “4 *
. half an ine. at a tine, s.d i. eauuring the water disvlacgec ee: titte.
m7 ~4 . 8A ae. 7 Sky - sary: ee a ee . - 7“
Tae -iece must te diy oe or exact increrce tt, and the water acocurately
e ac oe: . - a
witlas eal onan e
rw . gers on _ 4 + . 7 - —~ XN ry. - : A. “a 3 ¢ + om. oren, . x 4% a aN ~~
Tie 8 eAPatugs wu. Powarliy cov stpuctecn is shorn in the accommpany-
. ~~ 7 d. ~ acy . wn" ~~ vN- . - -4 2 md ry ial oe - -. wa , os “ . +. nm me, \ . - -~ 5 +" t ~ > -
Ln DOVOUP RY). Mhe piece 18 alepean ana whe Cistance cuitacutlentliy ceat-
4q “=e a 1. a ° op 4 ‘. 1 c , = 7” - 3 4 * “1 * - 47 . i) ~-
wmmagd ber the serewv, wilech Ls Pow Lite sinszle threac, wia l v/s diaretes
, _—_ . ne ae ” . L wae . "ye +, i 7. see sy ~ . 3 .- Vee an & af woe 7
, LS SCrev Go tupac? the craxcomwseel whiten ‘as an attacwient Cryo wiloeh
- 4 a” = . ms vA -_ aT 8g —* ; - a >. ” ein d. =) = -. - 7 a
tie serew is sto.wnea av tie Sa:te point of the wevolutio: every tine.
ry ~ ! — 5 - - Ny, “- 4. . 7 -- a4 - 7 ne -
The seretvy °'9 sunmmortedc vrom breatketsa wiich are attach be Las serevs to
3 7 a me vane: ~A 38 - iL ad ? $ ~ -. 4 ~ rr oy ae yee - ~ "A ow
Q@piliar. MMe wp ew bracket contains a norizortal sajgusting “evise 4
woe ts + - wv. - ~ ” 7. 4 A —- - u - c wv? =“ cL, ad _ %. ~ Lo -
Mion the seroyv is brouvht to an exact vertical. The veisnt of the » ceo
a) ote ye a 4 ryenyl > -~ d- r en -. 9 - -~ oY ~ wha + - 4 ‘ Nome
“ioe, 21d thay of wie serey ana cmorsbenan 18 sup oorted o- a ball besar-
oe ere - * a 4. mon" 7 . - ~ "8 ‘ “wep oy oc. 7 ™ 4 7 .. .
Lit the lower bracket. This is very mecesctar , at ease of tuocmirns is
“a9 + =o 74 a co, ene = sa el «. A. cs. a - tT .
very desirable, andowith neuve oLeces coule mov be attaincd without kali-
‘8
7. aed is
Cl oa a) e
7 7. +} 7 ; . C 4. -~ a. -7 c ~ 7 i“ ry . “A
Mie sLlose to be @icy ed is held by tiyv0o pointed se serevs threat
. ” -: oat ~ - =>,? oo : . - . st ae oe” ff d. ~ ~ io mn =r +
. invo 4a Cli» Which is atteacrnec to oe ort or the eresshean. The niece
”
4. v, - é we “77 - 7” 4. -- eas aa ~ nce ° o
: a hancs 13" from tie ssvrey and must be cmurver-balla..ced in sore way. ovis
ape “ sey eto taas 4. apis as pe , ~ - 4H arse ; Ds aaeyae! 4 7
is acsomolished sr exteraing the crossbean G' in the wo vosite aireciiior
-~- 3 . ~ ne - ans : a we = 7 . . _ . we dk A. s- ad. -
Ne aud susvendings from it auc veignt at svol a peitt as to exactly calance
r fer
ee ey ee? 4- - . _ .
the weizst of the Pee Som Seoqgsbex, is bolted to a tut woerkit gc on

103426
4 co yr? yrc ~ ces yar as 1 s ey eye: my oe ew TPL NN rsp 4 Lomas + oo ~ -
vi1e 12 Coreg ve Ay te Us.4£e: oD OAS J uv JIA AE a -. .' oe RS Mond —_ (* oy ok 1s Lu Oo! .@ i O77

this reason tho vwaiw.t oa tils lors projection ofr the crossiecu war @liises:
jut not quiia ervilized ov a veins >t minninst over 2a nullecr and n.ttached to
the exd of it. A 8nall purt of the welgl t a the apossen: is Lett
ureceralized in order that tho twensenevy to ti» 1a" >: always in one Gi-
rection £2 S90 vrevent error from back Lash. If the surrlus welcit was
left on the other side it would be neuirnilred ie the water disnlaced iny
tie niece.

mThe water ii. whieh the piece LS Glsvean Ls containea in qa laws
Somtn S' maivh, and 3! lors, and 2! wide. This ~iere is dlosed ib the
cenéew, and the water flows cvez a hnaife edre weir into a brass tube anc
from thete 2nto a buchec Li: Weicn 2t 25 wells ced ol1 a scale: welling two
yriepectisa of a ~ovrnt.

After the anvraratius was set us Gi attcr-t was nace to test it by

. -~. - = wae = “~ _. _ e oo . « ‘ a we) e . -, A ~ tse - o.
diuwinnt sone retalay vieors of which the moment of inertia wan Known.

success. With the exsccptio:: oF the tank ard welr every ary work wap
Paarl, Tae trouble was to keen the level of the water in the tark ex-
actiy une sae. It Wouba pile ws oan the walr anc then all come dovm at
once. Miis mer nave veen cue vartliys to Girt in the Water, vt even wi

cerfectiv olean water the vibration of tho building due to tie engino

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The ressen for this difficvlty is ret ara to Find. 12 “Lece
yo “pe i - a0 Soe 4. , .. 3 an A - aA, - = - - s 4
Gisooa wag only @ Very Shall test ~teso, and its total tiniecsior woul?
. ~~ r ’ 7, or ¢ * - “ * - ’ wee - “~ hee” : 7 a7. om TN . * il rm ” —
only nave viised tre level of the water a Litvle less tian ljeote Saat

fore, as tue niece wan 30" lors, the Girferensc: or 1l3vel for each 1/3?

7S ve . - _ © 7 ~~ ols ole Pd = “Oy . . . . . 7 s — ~ a4 bd:
irerenent yo WO Of 1 Little ever 1/iooo With the rotinenents cv

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TATE UNIV. LIBRA

MICHIGAN S RIES
INCA
312930251

99435