EJERCICIO DE ESTATICA

LUXGXDEG

r lgeedõj lj cmu gymtmu t gycdegr cg LOLREDEDM* Ljemjxrgr cgu a|lrzgu hl rlgeedõj

/JMXGU? Lc ‐GYMTM G‐ lu hl xdym

u|ylrymudedõj hl lalexmu*

grxde|cgedõj# lj äc djxlrgexÿgj a| lrzgu qlrxdegclu# fmrdzmjxgclu t

xljhljedg gc ndrm; lc –GYMTM B‐ lu hl xdym rmhdccm# t umcm ul lalexÿgj lj äc a|lrzgu qlrxdegclu t xljhljedg gc ndrm em`m ul `|luxrg lj cg udn|dljxl adn|rg# egbl ul÷gcgr w|l cg hdrleedõj hl cmu @m`ljxmu &aclefgu lj gz|c$ lu u|y|luxg?

UMC\EDMJ? Le|gedmjlu hl Lw|dcdbrdm? @0Avh

Ul djdedgrç gjgcdzgjhm cg u|`gxmrdg hl @m`ljxmu w|l galexgj gc –GYMTM G‐# w|l lu h l xdym

grxde|cgedõj# egbl ul÷gcgr w|l cgu xrlu a|lrzgu w|l gexÿgj umbrl cg qdng jmu djhdegj lc uljxdhm hlc @m`ljxm rluylexm gc –GYMTM G‐# udljhm jm guà ygrg lc –GYMTM B‐# hlbdhm g luxm# lu jlel ugrdm gudnjgrcl |jg hdrleedõj# lj luxl egum u|ymjhrl`mu w|l lc @m`ljxm lj lc –GYMTM B‐ lu g agqmr

hl cgu `gjledccgu hlc rlcmo &rlyrluljxghm emj cg aclefg rmog jm`brghg R B$#`çu xgrhl ul hlxlr`djgrç ud rlgc`ljxl ul rlgcdzm |jg emrrlexg u|ymudedõj*

Mbxljhrl`mu? A7 0 899J

A7 ul lje|ljxrg g 2` hl –GYMTM G‐ ljxmjelu h7 0 2`

A2 0 899J

A2 ul lje|ljxrg g 1` hl –GYMTM G‐ ljxmjelu h2 0 1`

A5 0 599J

A5 ul lje|ljxrg g 4` hl –GYMTM G‐ ljxmjelu h5 0 4`

ARB 0 =

RB ul lje|ljxrg g 72` hl –GYMTM G‐ ljxmjelu h8 0 72`

hlc udn|dljxl hdgnrg`g?

Lj cg udn|dljxl adn|rg mbulrqg`mu w|l xmhgu cgu a|lrzgu hluerdxgu emj rluylexm gc –GYMTM G‐#

fgelj ndrgr cg qdng lj uljxdhm hl cgu `gjledccgu hlc rlcmo# emjec|tljhm guà w|l xljhrçj udnjm ymudxdqm u|u rluylexdqmu `m`ljxmu?

Gycdegjhm u|`gxmrdg hl @m`ljxmu emj rluylexm g –GYMTM G‐ mbxljhrl`mu?

+ /JMXG?

hl hmjhl @ 0 A v h +

Djhdeg Djhdeg w|l xmhmu xmhmu cmu `m`lj `m`ljxmu xmu w|l qgtgj qgtgj g agqmr hl cgu cgu `gjledcc `gjledccgu gu hlc rlcmo ulrçj ulrçj

ymudxdqmu* W|lhgràg? +@7 + @2 + @5 + @8 0 9 U|uxdx|tljhm @ 0 A v h &A7$&h7$ + &A2$&h2$ + &A5$&h5$ + &ARB$&h8$ 0 9 U|uxdx|tljhm qgcmrlu &899J$&2`$ + &899J$&1`$ + &599J$&4`$ + &AR B$&72`$ 0 9 Hluylog`mu ARB

Mbulrqg`mu w|l cg `gnjdx|h w|l mbx|qd`mu hl

lu jlngxdqg# cm e|gc djhdeg w|l lj j|luxrg

u|ymudedõj hl w|l lc `m`ljxm yrmh|edhm ymr cg a|lrzg

rluylexm gc –GYMTM G‐ qg g agqmr hl

cgu `gjledccgu hlc rlcmo# a|l lrrõjlg* Ymr cm xgjxm# luxgbclel`mu cg emrrlexg hdrleedõj &lj emjxrg hl cgu `gjledccgu hlc rlcmo$ t cg rlyrluljxg`mu ymudxdqg*

Hl`muxrgedõj? Ud qmcqdärg`mu g gjgcdzgr cmu @m`ljxmu hl eghg a|lrzg emj rluylexm

gc –GYMTM G‐#

ylrm xm`gjhm lc uljxdhm emrrlexm hl cg ARB# umcm qgrdgràg lc udnjm hl @ 8# tg w|l yrmh|edràg |j ndrm hl cg qdng lj emjxrg hl cgu emjhdedmjlu hl j|luxrg u|`gxmrdg hl @m`ljxmu + W|lhgràg? +@7 + @2 + @5 - @8 0 9 U|uxdx|tljhm @ 0 A v h &A7$&h7$ + &A2$&h2$ + &A5$&h5$ - &ARB$&h8$ 0 9 U|uxdx|tljhm qgcmrlu &899J$&2`$ + &899J$&1`$ + &599J$&4`$ - &ARB$&72`$ 0 9 Hluylog`mu ARB &899J$&2`$ + &899J$&1`$ + &599J$&4`$ 0 &AR B$&72`$

Umc|edõj gy|jxg fgedg grrdbg

Ygrg hlxlr`djgr cg ARG# rlgcdzgrl`mu U|`gxmrdg hl A|lrzgu lj lc lol –t‐

# xm`gjhm

ymudxdqgu cgu a|lrzgu fgedg grrdbg t jlngxdqgu ud gy|jxgj fgedg gbgom* Egbl ul÷gcgr w|l hluemjmel`mu cg hdrleedõj hl cg a|lrzg AR G# guà w|l u|ymjhrl`mu w|l gy|jxg fgedg grrdbg# ymr cm xgjxm ul rlyrluljxgrç ymudxdqg*

Gudnjg`mu udnjmu ymudxdqmu –+‐ g a|lrzgu w|l gy|jxlj fgedg grrdbg t udnjmu jlngxdqmu – -– g a|lrzgu

w|l gy|jxlj fgedg gbgom

U|uxdx|tljhm qgcmrlu?

Hluylogjhm djeõnjdxg

Umc|edõj

Lc udnjm ymudxdqm jmu djhdeg w|l fded`mu |jg emrrlexg u|ymudedõj# cg grrdbg*

rlgc`ljxl gy|jxg fgedg

Adjgc`ljxl xgc t em`m ul `|luxrg lj cg udn|dljxl adn|rg# tg ul hlxlr`djgrmj xgjxm cg `gnjdx|h# hdrleedõj t uljxdhm hl

t

*

Egrcmu Ngrgt