HW19 - PROBLEM 6.121 Thepress shown isusedto embossasmall...

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Unformatted text preview: PROBLEM 6.121 Thepress shown isusedto embossasmall seal atE.Kn0wing1hat the vertical component ofthe force exerted on the seal must be 2401b, P determine (a)-‘[he required vertical force P, (b) the corresponding reaction at A. ’ [£13, =0:E—Doos20°=0 _ 24011: D 00520“ = 255.40 11) Q MA = u: [[Sin)cosofl°]DoosZG° + [(5 memo-flown —[(51n.) 00560“ +10in.)oosl§°]P - u .P=Bo.4s31b P=8051b1£ (b) a. H; = 0:44, -Dsin20° = o ' A, =87.351b 12?, = 0:Ay+2401b—80.51b = o 1’, = 159.5 lb A =181.9lb T 61.3“ ‘ SOLUTION FBI) DC: PROBLEM 6.133 RodCDisaflachedtoflwcullarDandpassesthmughawllar weldcdtu endB oflmrcrAB. Neglecfingthndfectoffi-icfion,dete:minefl1ecouplc M required to holdflae system in equilibrimn when .9 = 30“. BLCD fEFf-o: vml' D,J sin30°-(120 Ib)cos3fl° = 0 Dr _ 120]]: = 207.85 1b m30° Sin. 511130“ M = 3326 lb-in. 207.85 lb - M = D M =3.331dp-in.)4 PROBLEM 6.146 The bone rongaur shown is used in surgical procedures to out 11 bones. Damn-nine the magnimde of the forces exated on the bone at Ewhentwo 25-lhforcesarc applion shown. SOLUHON Note: By symmoirythehorimntal components ofpin forces on! 111111) mm. —"' BF: = I): Bx = U ( EMA = o: [1.1 in.)By — (4.4 in.}[2s lb) B,=lolnb L 2M4 = n: (1.6 in.)(loo lb) — [11 in.)(E) = u E =13331b< ...
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HW19 - PROBLEM 6.121 Thepress shown isusedto embossasmall...

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