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981_Mechanics Homework Mechanics of Materials Solution

981_Mechanics Homework Mechanics of Materials Solution -...

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Unformatted text preview: 8.68 A vertical force P isapplied atthe cmteroftlw fiecendofcanfilevm'beamAB. PROBLEM 8-68 (a) Ifthc beam is installed with the web vertical as= 0) and with its longitudinal axis AB horizontal, determine the magnitude of the force P for which the normal mess a! point a is +120 MPa. (b) Solve part a, assuming thal the beam is installed with fi= 3°. SOLUTION For w 250 x LH. 8 MM 5+“? sec+:‘on 1 5x -.- gssglo’mm == 535x10" m3 w250x44.3 83 = 9520 ”03 W. = ciao-x Io" m‘ Ai‘ ane scoffs" Con+afnfnr3 foimf a. My : 13,9 €05 fl ._) Md 7 P4P sfnfl S+mss d a. 6‘: m+ 6‘ Aflpowajafe 1901:! -__f I? - ~5muow =51}! kw -— -l o 10"+535¥ %] .. __ l2.0__>g___lo‘ (a) [are Pau- _l#25 _ o ... IQDX ID‘ cos 3° +$m3° d = 7 KN _‘ (b1 fl " 3 PO” ‘ 1.2q—H—TXK'o-a‘. “fie—"Ho 3?. ...
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