lec30-20110325 - ’ FWD 1‘) TfifionfF/L‘ ZFXSOJ...

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Unformatted text preview: ’ FWD 1‘) TfifionfF/L‘ ZFXSOJ Eli—’0 J EFS'PVI’L‘A/ POSSIBLE MDT/cw MODEi 8-2 Determine the range of values for which the horizontal force P will b .— prevent the crate from slipping down M pp I / or up the inclined plane. Take “3:0.1. M°DE Z / - Lemma LIMIT: M0012 / "(w h 3—H? D N‘W&$2¢°—P$7nw°;0 ' K, I 43 \/94 N: Nessa? +Psmzo° —® /\' Fl ERSOJ 963326°awsw§+f:o ——-® [\l /MPEnlD/N!r'y MOTION/J c‘fifizoiw SuB. CD INTO (29 P 675200 'WSMZOO +(0\|) (Wfiaszoa+ PSM 20°) ;o P_ WSMZOO ~oilw53320° P, " Nzwfioszo°+P$rnLo° —@ IMPENDWCT Munch/J ECS:0.[ A/ Eszo) PODSZob—-\USMZDQ— _(;.:O —@ SUB (3 //V7'o Q9 YIELDS P: WSMZS +O\|V\/CDSZOD I 0 (re, M @520°—(o\[)3m7,§ — ' ~ CDNCLUSIKBV: MSW! é p 5 MM w 44$ 8% WED/32$ A WEDGE {5 A SMALL MficH/ME, . SLIGHTLY ADJ usT 01a MW}?— A HEAVY LOAD. - /MNéI=o/?M AN 4PPLHED Form: M/TO MUCH MRGER FoRcEé CHOP HKEWOOD BY M 4x25 8-66 If the beam AD is loaded as shown, determine the horzontal force P which must be applied to the wedge in order to remove it from under the beam. The coefficients of static friciton at the wedge’s top and bottom surfaces are HCA Zflanw respectively. If P = 0, is the wedge self-locking? ' FWD P AND CHECK SELF—LDLK/A/C—l THEO/ZfES : Ear/O) EFH‘Z—OJ EMSOJ ng/XLA/ :MD :0) F—(ENZ) ~06) (9+ Wag): 0 NC :\B,|4-|z—I\/ - WEDGE To ___ IMPEND/Vfi MDT/0M NE “in; $ «/ II - 0 ° :; .3: .3 \H— s ‘4 [L OvNfiF’W‘ / ——>i> M H ER FFSC. (0 3X3 3 4 0 I 46W f L EM 1 FM : 0'25 NA 2 x30) 9+ MAS-mi (mzsA/vasio‘» 4 en :0 —<D ZRIFO 2 “IV/46:5“; “ (Oth/VA) 3m [06+ (3.\‘(‘ :0 —"® FROM @2 N4 :{Zfl-gw SUE. IVA INTO (DJ P+ ([239) S'Mbo ——(o\2&)q2‘1sg)&$‘§g%b yo PSESBM/ MA . CHECK SELF—LocK/A/fi Assun/IE /N\PEA/DWC1 MDT/w @ c: CHEcK sub/mj @ A {\{bfi if“ /MPE’\/DM/61 MOT/ON @ d D \U\ .‘. F—FQ: EFSC :jbksc—Nc: 0‘35— A/C— E?" 1 1— :UGSNC, No Ix EFX: ) NASH/H00 + F-MCBs/oa—~ 4—60 7/0 ———— ® 2%:02 'Nl’r [05W “ RCA EMS—913% DD -——@ @XB. l++®flfiék WE HAVE— : mm» o r 17ml!) I we W'Jr HAWXBH + «NA é°— EAWJfi em) =5 g1 z 0.1636,. are“ 0-25. 4% A' S #6 A ...
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lec30-20110325 - ’ FWD 1‘) TfifionfF/L‘ ZFXSOJ...

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