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Pr ac t i c a2es t at i c a
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Pr of es or a:
I NTROD ODUCCI ÓN Ti p osdef u er z as
oFu er z a sp orc o nt a c t o :So na qu el l a sq ues ep r o du c enc u an dol o sc u er p osen t r a ne nc o n ex i s t endospos i bl esf or mas ,l asc onc ent r adasyl asdi s t r i bui das . ent r adas :Sonaquel l asc uy apos i bi l i dadder epr es ent ac i edacuandoelár ea ➢ Conc óns ac t i ma ,c o mp mp ar a dac o ne lár eat o t al del c uer poenel queac t ec ons i der aa úaesmí n úa,s c o mo mop un t u al . s t r i bui das :Ses ubdi v i denal av ezen: ➢ Di a.Di s t r i bui dasporuni daddel ongi t ud:Cons t i t uy enunmodel oqueper mi t ec ons i der aral a a c t u an dos ob r eu ne j e . b.Di s t r i bui dasporuni daddeár ea:Cons t i t uy eno t r omodel oqueper mi t ec ons i der aral asf a c t u an dos ob r eu nas u pe r fi c i e . oFu er z a sad i s t a nc i a :So na qu el l a sq ues ep r o du c enc u an dol o sc u er p osn os ee nc u en t r c ont ac t o.Ent r ees t ass eenc uent r anl asgr av i t ac i onal es ,l asel t r i c asyl asma magnét i c as . éc Ef ec t osi nt er nosyex t er nospr oduc i dosporf uer z as
Laacc i eu nc ue r p os ob r eo t r op r o du cee f e ct o s,l osc ual e sp ue de nc on si d er a r s ed ed o ónd Losi nt er nosyl osex t er nos .
Es t osenge ner a lmo di fi c ane le s t ad oi n i c i a ld el c uer po ,y ase ae ns ues t a dod emo v i mi e n s uf o r ma .Así ,l o se f e ct o se x t e r no ss epr o du c enc ua nd oe x i s t eu nc ambi oenel es t a doder d emo v i mi en t od eu nc ue r p o,mi en t r asqu el o si n t e r n oss ed anat r a vésd ed ef o r ma c i o ne sd c u e r p o , Sign up to vote on this title
Useful Not useful do i n de pe nd i e nt e me me nt edequ ee s t nr e po s oomo v i mi e nt o .D ee s t o s sl a Es t i c as o éne át ól í gi c ons i der al osex t er nos ,esdec i r ,c omoc uer posr dos .
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5.4_segunda_ley_de_newton Anilisis Estructural
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Pr i nc i pi odeEqui l i br i o
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Es t epr i nc i pi oes t abl ec equedosf uer z ases t l i br i oc uandos us umav ec t or i al esn ánenequi c ual s ec umpl i r i empr eyc uan dod i c hasf ue r z ast e ng ani gu al mag ni t u d,s eanc ol i n eal e ás pos eans ent i dosc ont r ar i os .
To memosunap ar t aPendondeact nl a sf u er z a sF1yF2q uec ump l e nl a sc o nd i c i o n í cul úa c i t adas : F1F2 Segúnes t epr i nc i pi oF1=-F2yencons ec uenc i af or manunsi s t emadef uer z asenequi l i Del aSe gu nd aL e ydeNe wt o ns et i e nequ eR=mays im e sdi s t i n t odec er o ,e nt o nc e s n ec es ar i a me nt ea=0,l oq ues i g ni fi c aqu el apa r t u l aPn oh as u f r i d omo di fi c a c i g u í c ónal e s t a dod emo v i mi e nt o,esdec i rn os el eh ap r o du ci doa ce l er a ci g un a,q uee sl oq ue ónal c ar ac t er i z aal equi l i br i o. OBJETI VOS Ver i fi cac i x pe r i me nt a ld e: óne You're Reading a Preview oEl pr i nc i pi odeadi c i es i s t e ma sd ef u er z a s . ónd full access with a free trial. oEl pr i nc i pi odeadi c i i s t emasUnlock def ue r z asenequi l i br i o. óndes oPr i nc i pi odeSt ev i n.
Download With Free Trial
MATERI ALYEQUI PO 1 .Me s ad ef u er z a syac c e s or i o s 2.Di namóme t r os i mpl e 3 .Ni v e ld ema no 4 .Ma s as :4x10 0g ,4x50 g,2x20 g,1x10 g
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ónant 3 .Enl ac on fig ur a ci er i or ,agr egueuns i s t emadef uer z asenequi l i br i o:
PARTE2
1.Fi j eunapol eaenl ar ef er enc i adec er ogr ados ,ydi s pongadeot r asdosar bi t r ar i ament e ma ne r aqu es el o gr eel eq ui l i br i od el aa r go l l ac ol o ca ndoma sa si gu al esenc adaun a. Unav ezde t er mi nadoel equi l i br i oyconel pr opós i t oder epr es ent arl adi r ec ci óndecadaun l asf uer z as ,c ons i gnel osdat osenl at abl a1 2.Per mi t aques obr el aar gol l asól oac t af uer z adel hi l oenpos i c i er oydescompon úel ónc e xper i ment al ment el af uer z aequi l i br ant e,endosc omponent esor t ogonal es ,v er i fi carl as i deequi l i br i o,r epi t ael anál i s i sdel apar t adoant er i oryr egi s t r el asmedi c i onesenl at abl a2 T ABLA1 | MASA[Kg]| GRAVEDAD[m/ s2]| FUERZA| MAGNI TUD[N]| POSI CI ÓNANGULAR[ | 0. 150| 9. 78| F1| 1. 467| 0| | 0. 150| 9. 78| F2| 1. 467| 120| | 0. 150| 9. 78| F3| 1. 467 | 240| T ABLA2 You're Reading a Preview | MASA[Kg]| GRAVEDAD[m/ s2]| FUERZA| MAGNI TUD[N]| POSI CI ÓNANGULAR[ Unlock full access with a free trial. | 0. 100| 9. 78| F1| 0. 978| 0| | 0. 070| 9. 78| F2| 0. 6846| 135| Download With Free Trial | 0. 070| 9. 78| F3| 0. 6846| 225| PARTE3 1.Cons i der euns i s t emadet r esf uer z asar bi t r ar i o,ac t uandos obr el aar gol l a,de t er mi nel a equi l i br ant e,empl eandoel di namómet r o,pr ev i ament ec al i br ado( endi r ec c i i z ont al ) ónhor Regi s t r el osdat osdef uer z asypos i c i onesangul ar esenl at abl a3. Sign up to vote on this title
Useful Not useful T ABLA3 ÓNANGULAR[ | MASA[Kg]| GRAVEDAD[m/ s2]| FUERZA| MAGNI TUD[N]| POSI CI || 9 8| F1| 44| 11|
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ónenc 1.¿P o r q ué l amagni t uddel at ens i ad ah i l oe si g ua lal ad el p es odel ama s aq ues e e nc u en t r as u s pe nd i d ad eél ?¿Sí ?¿No?¿P o r q ué?.
R:Sí esi gual l at ens i ec ad ahi l oa lp es odel ama saq uel ec or r e sp on dedel oc ont r a r ónd noquedar us pendi daenel ai r e,esdec i r ,l aac c i ec a dah i l os o br es ur e s pe c t i v am í as ónd c ont r ar i aen s ent i do,per oi gual endi r ec ci gn i t u d. ónyma 2.¿Qué ef ec t ot i enenl aspol easenl at ens i xhi bi daal ol ar godel oscabl es ? óne
R:El e f e ct odel a sp ol e asesmuyi mp or t a nt e,y aq uee s t a sp er mi t e nq uel osc ab l e ss ee x t al máx i moev i t el af r i c ci ea f ec t a r osr es ul t adosques eobt i enenenl apr t ándos ónqu í al ác pues ,l osobt eni doss onmáspr ec i s os .
3.Par ac adae xper i ment or eal i z ado,es t abl ez c al asc ondi c i onesdeequi l i br i oenc adac as o R: Par al ap ar t e1 :Seo bs er vó q uea lac t u ard ospa r e sd ef ue r z as ,c a dapa rc ons ur e sp ec t i deacc i s erl asf uer z asi gual esenc adae xt r emoequi l i br anel s i s t ema,s i endoes t asd ón,al s en t i d oc o nt r a r i oi n cl u socu an doal asdo spr i mer a ss el ess umao t r a sdo sdema ner a per pendi c ul aras ul i s t a sn u e v asc on sa si g ua l e sn oa l t e r a nel s i s t e ma . í neadeacc ón,e You're Reading a ma Preview
Unlock full access with a free trial. Par al apar t e2:Enl apr i me r apr ue ba s ed emos t r uee nu ns i s t e mad e3f u er z a ss e pa r óq osi gual esyc onmas asi gual esesuns i s t emadeequi l i br i o,s i endol osáng ul os0°, ángul Download With Free Trial 240°.Enl as eg un dap r u eb as eob s e r vó qu ea ls e rl ama sad el ap os i c i e r oma y o rq u ónc o t r asdo s,e s t a sd ebe ns eri g ua l e syor t o gon al esun ad el ao t r ays ee nc ue nt r a na1 35° d pr i mer ar es pec t i v ament e,ademásl ama s ad eu nadel a ss eg un da sde bes erme no ral ap esas omponeunaf uer zaenot r osdosdemenormagni t ud. í comosedesc
Par al ap ar t e3 :See nc ont r ues i en dou ns i s t e mad e3f ue r z asc ol o ca dasar b i t r a r i a me n óq pesost ambi r bi t r ar i os ,e x i s t eunac uar t aquec onunade t er mi nadapos i c i l i br a éna ónequi Sign up to onf this title s i s t e ma ,a de másdequees t adebeserc as ii gual al as uma de l a svote ot r as r ec u enc i as .
ónal 4.Enr el ac i apar t e
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F1=1. 4 67i[ N]1 20° F2=0. 7 33 5i +1 . 2 70 45j [ N] R=0 . 7 33 5i +1 . 2 70 45j [ N] R=1. 4669[ N] (=6 0° y(=3 0° X F1=1. 467[ N] 240° F3=1. 467[ N] Par t eI I . 2Y F2=0. 6846[ N] R=0. 6915[ N] F1=0 . 9 78i [ N] F2=0. 4 84 08i +0. 4 84 08j [ N]1 35° R=0 . 4 93 91i +0 . 4 84 08j [ N] R=0. 691578[ N] (=4 5° y(=4 5° X
You're Reading a Preview F1=0. 978[ N] 225°
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F3=0. 6846[ N]
R:Del oant er i ors ec onc l uy equeenef ec t ol ar es ul t ant eobt eni daapar t i rdedosf uer z asd unodel oss i s t emas ,esi gual aunat er c er a,c umpl i ai nf or mac i eni daene éndoseas íl ónobt Labor at or i o.
Sign up toa vote this title 5.Res pec t oal apar t eI I I . 1,es t i mel af uer z aequi l i br ant egr c ay nal t i c a me nt e,apar t i r áfi í on d at o st o ma do ss ob r el ame s ad ef u er z a s .¿Qué c onc l uy e ? Useful Not useful
P
I I I1Y
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230° F4=1. 956[ N] R:Porl ot ant ol as umadel asf uer z asar bi t r ar i asdac omor es ul t ant eal af uer z aqué equi s i s t ema,t ant oanal i c a,c omogr c a me nt e ,c o nl oqu en ue v a me nt es ec o mp r u eb al ac o í t áfi d el o sd at o so bt e ni do se x pe r i me nt a l me nt e. 6.¿Cuál e ss onl asmod i fi c ac i o ne se x t er n asei n t e r n asenl aar g ol l ac ua nd os ea gr e gans i def uer z asenequi l i br i o? R:Laar gol l ano
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