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522_Mechanics Homework Mechanics of Materials Solution

522_Mechanics Homework Mechanics of Materials Solution -...

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Unformatted text preview: r—'"*'“‘I L____J EM 5 39 5.39 A solid steel bar has a square cross section of side b and is supported as shown. PROBL ° Knowing that for steel ,0 = 7860 km, dame the dimension b of the bar for which the maximum normal stress due to bending is (a) 10 MPa, (b) 50 MPa. b A c E D 3 fl SOLUTION Weral'} JEMSI'H Y: p3 71.2mm L J .1!) LEI" L" 47:40.! fauna-*k 6F ¥eam 1’” I I w w ALpg = b‘Lpg ’1.2m Reae‘l‘v'qns a'} C “J D C= D= ¥ x BahJinj women'l' 41+ C . w— E ‘ .f-wa- C A '3‘: M ‘9ch = O M - L—s 3 exam :o v M = 4%- een‘nnfl momenf a+ CGW‘EV‘ o‘P beam 92m, = o W) «(*5 am: M = - 15% For a. square sad-fan Nor-Mm? 5+r‘ess Sake 'Fw b Daria: L: S.C m F = 7360 lea/m3 8 = $3! fry/5" (a: s: \OIIO‘ Pa m 5' -.- SOKIO‘ Pa can be (3“? 73:39“) = 33.3uto" m : 33.3 mm -- 'I. (m w 3‘3igfifgf)-"‘ = QGHIO‘SM : “cm ...
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