354 Static Equilibrium and ElasticitySection 12.3Examples of Rigid Objects in Static EquilibriumP12.9τ∑==−03mg rTraf2450045 0215004502530 9 80530177TMgTMggmTg−°==°=°==sin.sin.sin..kgNkgbgafafm3rθ= 45°1 500 kgFIG. P12.9*P12.10(a)For rotational equilibrium of the lowest rod about its point of support, ∑=0 .+−12 01. g 3 cm4 cmgmgm1900=. g(b)For the middle rod,+=m221209050cmgg cm..m252 5=. g(c)For the top rod,525120904603.ggcm++−=mm349 0=P12.11Fg→standard weight′ →Fgweight of goods soldFFFggg024002601312100131211008 33%.=′FHGIKJ−′′FHGIKJ=−FHGIKJ×=24.0 cm26.0 cmFgF′gFIG. P12.11*P12.12(a)Consider the torques about an axis perpendicular
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .