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diff --git a/fiz/vaje/1/dokument.lyx b/fiz/vaje/1/dokument.lyx new file mode 100644 index 0000000..55e1637 --- /dev/null +++ b/fiz/vaje/1/dokument.lyx @@ -0,0 +1,816 @@ +#LyX 2.3 created this file. For more info see http://www.lyx.org/ +\lyxformat 544 +\begin_document +\begin_header +\save_transient_properties true +\origin unavailable +\textclass article +\begin_preamble +\usepackage{siunitx} +\sisetup{output-decimal-marker = {,}, quotient-mode=fraction, output-exponent-marker=\ensuremath{\mathrm{3}}} +\end_preamble +\use_default_options true +\maintain_unincluded_children false +\language slovene +\language_package default +\inputencoding auto +\fontencoding global +\font_roman "default" "default" +\font_sans "default" "default" +\font_typewriter "default" "default" +\font_math "auto" "auto" +\font_default_family default +\use_non_tex_fonts false +\font_sc false +\font_osf false +\font_sf_scale 100 100 +\font_tt_scale 100 100 +\use_microtype false +\use_dash_ligatures true +\graphics default +\default_output_format default +\output_sync 0 +\bibtex_command default +\index_command default +\paperfontsize default +\spacing single +\use_hyperref false +\papersize default +\use_geometry false +\use_package amsmath 1 +\use_package amssymb 1 +\use_package cancel 1 +\use_package esint 1 +\use_package mathdots 1 +\use_package mathtools 1 +\use_package mhchem 1 +\use_package stackrel 1 +\use_package stmaryrd 1 +\use_package undertilde 1 +\cite_engine basic +\cite_engine_type default +\biblio_style plain +\use_bibtopic false +\use_indices false +\paperorientation portrait +\suppress_date false +\justification true +\use_refstyle 1 +\use_minted 0 +\index Index +\shortcut idx +\color #008000 +\end_index +\secnumdepth 3 +\tocdepth 3 +\paragraph_separation indent +\paragraph_indentation default +\is_math_indent 0 +\math_numbering_side default +\quotes_style german +\dynamic_quotes 0 +\papercolumns 1 +\papersides 1 +\paperpagestyle default +\tracking_changes false +\output_changes false +\html_math_output 0 +\html_css_as_file 0 +\html_be_strict false +\end_header + +\begin_body + +\begin_layout Title +Ravnovesje togega telesa +\end_layout + +\begin_layout Author +Anton Luka Šijanec +\end_layout + +\begin_layout Date +2. + oktober 2022 +\end_layout + +\begin_layout Abstract +Poročilo prve vaje pri predmetu +\noun on +F41 +\noun default + na Gimnaziji Bežigrad v 4. + letniku. + Vaja je potekala 15. + septembra 2022. +\end_layout + +\begin_layout Standard +\begin_inset CommandInset toc +LatexCommand tableofcontents + +\end_inset + + +\end_layout + +\begin_layout Section +Uvod +\end_layout + +\begin_layout Standard +Za ravnovesje togega telesa morata biti izpolnjena dva pogoja: +\end_layout + +\begin_layout Enumerate +vsota vseh zunanjih sil mora biti nič in +\end_layout + +\begin_layout Enumerate +vsota navorov zunanjih sil mora biti nič. +\end_layout + +\begin_layout Section +Naloga +\end_layout + +\begin_layout Standard +Opazuj ravnovesje lesene palice v različnih legah! +\end_layout + +\begin_layout Section +Potrebščine +\end_layout + +\begin_layout Itemize +palica +\end_layout + +\begin_layout Itemize +silomer (2) +\end_layout + +\begin_layout Itemize +meter +\end_layout + +\begin_layout Itemize +geotrikotnik +\end_layout + +\begin_layout Section +Potek dela +\end_layout + +\begin_layout Subsection +Vleka palice do premika +\begin_inset CommandInset label +LatexCommand label +name "subsec:Vleka-palice-do-premika" + +\end_inset + + +\end_layout + +\begin_layout Standard +Palico na levi strani pridrži tako, da se lahko vrti okrog krajišča. + Na desnem krajišču jo vleci s silomerom pravokotno na palico tako, da se + ravno še dotika tal (se še ne dviguje). + Izmeri silo ter rezultat meritve preveri še računsko! Manjkajoče količine + za izračun izmeri. + Izračunaj silo v osi! +\end_layout + +\begin_layout Standard +\begin_inset Formula +\[ +F_{\text{{izmerjena}}}=\SI{3,4}{\newton} +\] + +\end_inset + + +\end_layout + +\begin_layout Standard +\begin_inset Formula +\[ +l=\SI{0,6}{\meter} +\] + +\end_inset + + +\end_layout + +\begin_layout Standard +\begin_inset Formula +\[ +m=\SI{0,6992}{\kilo\gram} +\] + +\end_inset + + +\end_layout + +\begin_layout Standard +\begin_inset Formula +\[ +x_{F_{g}}=\frac{{l}}{2} +\] + +\end_inset + + +\end_layout + +\begin_layout Standard +\begin_inset Formula +\[ +F_{\text{{teoretična}}}=mg\frac{{x_{F_{g}}}}{l}=\SI{0,6992}{\kilo\gram}\cdot\SI{9,81}{\kilo\gram\meter\per\second\squared}\cdot\frac{{1}}{2}=\SI{3,429576}{\newton} +\] + +\end_inset + + +\end_layout + +\begin_layout Standard +\begin_inset Formula +\[ +F_{\text{{os}}}=F_{\text{{teoretična}}} +\] + +\end_inset + + +\end_layout + +\begin_layout Subsection +Vleka silomera vedno navpično +\begin_inset CommandInset label +LatexCommand label +name "subsec:Vleka-silomera-vedno-navpično" + +\end_inset + + +\end_layout + +\begin_layout Standard +Palico dviguj okoli osi tako, da vlečeš silomer še vedno navpično navzgor. + Silo, s katero vlečeš, izmeri ter jo izračunaj pri kotih +\begin_inset Formula $\ang{30}$ +\end_inset + + in +\begin_inset Formula $\ang{45}$ +\end_inset + +. + Kolikšna je v teh primerih sila v osi? Primerjaj rezultate za različne + lege palice in jih komentiraj. +\end_layout + +\begin_layout Standard +\begin_inset Float table +placement h +wide false +sideways false +status open + +\begin_layout Plain Layout +\align center +\begin_inset Tabular +<lyxtabular version="3" rows="3" columns="2"> +<features tabularvalignment="middle"> +<column alignment="center" valignment="top"> +<column alignment="center" valignment="top"> +<row> +<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none"> +\begin_inset Text + +\begin_layout Plain Layout +kot +\begin_inset Formula $\left[^{\circ}\right]$ +\end_inset + + +\end_layout + +\end_inset +</cell> +<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none"> +\begin_inset Text + +\begin_layout Plain Layout +sila +\begin_inset Formula $\left[\si{\newton}\right]$ +\end_inset + + +\end_layout + +\end_inset +</cell> +</row> +<row> +<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none"> +\begin_inset Text + +\begin_layout Plain Layout +30 +\end_layout + +\end_inset +</cell> +<cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none"> +\begin_inset Text + +\begin_layout Plain Layout +3,5 +\end_layout + +\end_inset +</cell> +</row> +<row> +<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none"> +\begin_inset Text + +\begin_layout Plain Layout +45 +\end_layout + +\end_inset +</cell> +<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none"> +\begin_inset Text + +\begin_layout Plain Layout +3,4 +\end_layout + +\end_inset +</cell> +</row> +</lyxtabular> + +\end_inset + + +\end_layout + +\begin_layout Plain Layout +\begin_inset Caption Standard + +\begin_layout Plain Layout +Izmerjene količine pri različnih kotih pri nalogi +\begin_inset CommandInset ref +LatexCommand ref +reference "subsec:Vleka-silomera-vedno-navpično" +plural "false" +caps "false" +noprefix "false" + +\end_inset + + +\end_layout + +\end_inset + + +\end_layout + +\end_inset + + +\end_layout + +\begin_layout Paragraph +Rešitev +\end_layout + +\begin_layout Standard +Sila je ne glede na kot enaka in sledi predpisu +\begin_inset Formula $F=\frac{{1}}{2}F_{g}$ +\end_inset + +, torej je teoretična sila enaka kot pri nalogi +\begin_inset CommandInset ref +LatexCommand ref +reference "subsec:Vleka-palice-do-premika" +plural "false" +caps "false" +noprefix "false" + +\end_inset + +. +\end_layout + +\begin_layout Subsection +Vleka pravokotno na palico +\begin_inset CommandInset label +LatexCommand label +name "subsec:Vleka-pravokotno-na-palico" + +\end_inset + + +\end_layout + +\begin_layout Standard +Palico dviguj okrog osi tako, da je silomer ves čas pravokoten na palico. + Izmeri silo pri kotih +\begin_inset Formula $\ang{30}$ +\end_inset + +in +\begin_inset Formula $\ang{60}.$ +\end_inset + + Silo tudi izračunaj! +\end_layout + +\begin_layout Standard +\begin_inset Float table +placement h +wide false +sideways false +status open + +\begin_layout Plain Layout +\align center +\begin_inset Tabular +<lyxtabular version="3" rows="3" columns="2"> +<features tabularvalignment="middle"> +<column alignment="center" valignment="top"> +<column alignment="center" valignment="top"> +<row> +<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none"> +\begin_inset Text + +\begin_layout Plain Layout +kot +\begin_inset Formula $\left[^{\circ}\right]$ +\end_inset + + +\end_layout + +\end_inset +</cell> +<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none"> +\begin_inset Text + +\begin_layout Plain Layout +sila +\begin_inset Formula $\left[\si{\newton}\right]$ +\end_inset + + +\end_layout + +\end_inset +</cell> +</row> +<row> +<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none"> +\begin_inset Text + +\begin_layout Plain Layout +30 +\end_layout + +\end_inset +</cell> +<cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none"> +\begin_inset Text + +\begin_layout Plain Layout +3,1 +\end_layout + +\end_inset +</cell> +</row> +<row> +<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none"> +\begin_inset Text + +\begin_layout Plain Layout +60 +\end_layout + +\end_inset +</cell> +<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none"> +\begin_inset Text + +\begin_layout Plain Layout +1,8 +\end_layout + +\end_inset +</cell> +</row> +</lyxtabular> + +\end_inset + + +\end_layout + +\begin_layout Plain Layout +\begin_inset Caption Standard + +\begin_layout Plain Layout +Izmerjene količine pri različnih kotih pri nalogi +\begin_inset CommandInset ref +LatexCommand ref +reference "subsec:Vleka-pravokotno-na-palico" +plural "false" +caps "false" +noprefix "false" + +\end_inset + + +\end_layout + +\end_inset + + +\end_layout + +\end_inset + + +\end_layout + +\begin_layout Standard +\begin_inset Formula +\[ +F_{\ang{30}}=\cos\ang{30}\cdot F_{g}\cdot\frac{{1}}{2}=\cos\ang{30}\cdot\SI{6,859152}{\newton}\cdot\frac{{1}}{2}=\SI{2,97009994021}{\newton} +\] + +\end_inset + + +\end_layout + +\begin_layout Standard +\begin_inset Formula +\[ +F_{\ang{60}}=cos\ang{60}\cdot F_{g}\cdot\frac{{1}}{2}=\SI{1,714788}{\newton} +\] + +\end_inset + + +\end_layout + +\begin_layout Subsection +Vleka do premika z vpenjanjem na drugih mestih +\begin_inset CommandInset label +LatexCommand label +name "subsec:Vleka-do-premika-z-vpenjanjem-na-drugih-mestih" + +\end_inset + + +\end_layout + +\begin_layout Standard +Vpni silomer za kaveljček ter izmeri in izračnuaj silo, s katero vlečeš + silomer pravokotno na palico, ta pa se ravno še ne dvigne. + Meritve ponovi tudi pri drugem kaveljčku. +\end_layout + +\begin_layout Standard +\begin_inset Float table +placement h +wide false +sideways false +status open + +\begin_layout Plain Layout +\align center +\begin_inset Tabular +<lyxtabular version="3" rows="3" columns="2"> +<features tabularvalignment="middle"> +<column alignment="center" valignment="top"> +<column alignment="center" valignment="top"> +<row> +<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none"> +\begin_inset Text + +\begin_layout Plain Layout +razdalja med osjo in kaveljčkom +\begin_inset Formula $\left[\si{\meter}\right]$ +\end_inset + + +\end_layout + +\end_inset +</cell> +<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none"> +\begin_inset Text + +\begin_layout Plain Layout +sila +\begin_inset Formula $\left[\si{\newton}\right]$ +\end_inset + + +\end_layout + +\end_inset +</cell> +</row> +<row> +<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none"> +\begin_inset Text + +\begin_layout Plain Layout +0,405 +\end_layout + +\end_inset +</cell> +<cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none"> +\begin_inset Text + +\begin_layout Plain Layout +5,1 +\end_layout + +\end_inset +</cell> +</row> +<row> +<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none"> +\begin_inset Text + +\begin_layout Plain Layout +0,455 +\end_layout + +\end_inset +</cell> +<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none"> +\begin_inset Text + +\begin_layout Plain Layout +4,5 +\end_layout + +\end_inset +</cell> +</row> +</lyxtabular> + +\end_inset + + +\end_layout + +\begin_layout Plain Layout +\begin_inset Caption Standard + +\begin_layout Plain Layout +Izmerjene količine na različnih kaveljčkih pri nalogi +\begin_inset CommandInset ref +LatexCommand ref +reference "subsec:Vleka-do-premika-z-vpenjanjem-na-drugih-mestih" +plural "false" +caps "false" +noprefix "false" + +\end_inset + + +\end_layout + +\end_inset + + +\end_layout + +\end_inset + + +\end_layout + +\begin_layout Standard +\begin_inset Formula +\[ +F_{g}x_{F_{g}}=F_{1}x_{1}\rightarrow F_{1}=\frac{F_{g}x_{F_{g}}}{x_{1}}=\SI{5,080853}{\newton} +\] + +\end_inset + + +\end_layout + +\begin_layout Standard +\begin_inset Formula +\[ +F_{2}=\frac{{F_{g}x_{F_{g}}}}{x_{2}}=\SI{4,5225178022}{\newton} +\] + +\end_inset + + +\end_layout + +\begin_layout Subsection +Vleka do premika pod kotom +\begin_inset CommandInset label +LatexCommand label +name "subsec:Vleka-do-premika-pod-kotom" + +\end_inset + + +\end_layout + +\begin_layout Standard +Silomer iz primera +\begin_inset CommandInset ref +LatexCommand ref +reference "subsec:Vleka-do-premika-z-vpenjanjem-na-drugih-mestih" +plural "false" +caps "false" +noprefix "false" + +\end_inset + + vleci pod kotom +\begin_inset Formula $\ang{30}$ +\end_inset + +glede na palico tako, da se ta ravno še ne dvigne. + Izmeri silo ter jo tudi izračunaj! +\end_layout + +\begin_layout Standard +\begin_inset Formula +\[ +F_{\text{{izmerjena}}}=\SI{1}{\newton} +\] + +\end_inset + + +\end_layout + +\begin_layout Standard +\begin_inset Formula +\[ +F=\frac{F_{y}}{\sin\ang{30}}\wedge F_{y}l=F_{g}x_{F_{g}}\rightarrow F=\frac{{F_{g}x_{F_{g}}}}{\sin\ang{30}l}=F_{g}=\SI{6,859152}{\newton} +\] + +\end_inset + + +\end_layout + +\begin_layout Standard +Meritev je bila očitno narobe izvedena, saj se +\begin_inset Formula $F_{\text{{izmerjena}}}$ +\end_inset + +občutno razlikuje od +\begin_inset Formula $F_{\text{{teoretična}}}$ +\end_inset + +. +\end_layout + +\begin_layout Section +Zaključek +\end_layout + +\begin_layout Standard +Razen meritve +\begin_inset CommandInset ref +LatexCommand ref +reference "subsec:Vleka-do-premika-pod-kotom" +plural "false" +caps "false" +noprefix "false" + +\end_inset + + vse izmerjene sile glede na primerjavo s teoretično napovedjo odstopajo + malo — natančne so vsaj na dve decimalni mesti. +\end_layout + +\end_body +\end_document |