9Tftnc LC,AU SPr(fl ltr.ID EtAsftc ry /7r(ziztbtD )EWf tN Eef,ctEBty'pl-fk rqartJl4r l" lr^< o "rr-, id," o Li'rr/ ,h,r)"){r'6t lot16g,th,'/ crT$ t e.l'*4 ?'rcq/e1rto f {'r*, o*o1 ff{*(E Lk, n c prz o peLn EJs/wss : arfunc'/ 7rr. Yslrz",l,r t tn€atr*{ "{ fr-{ /[" ilwrt(o,t}.c rrelu/a1 -:tkur/rq"h,**Llq ' ,rtilf.--r.{Lc*^o/olul reirb,ea t,t;Alulz t,'* oh/nt+€F=oY-)<If,,=o'(^d=o)(EA=.)e7.^'I'/i(A a4t=o /;'r,?,c)(* vnry '*rLt ),f oto/:"( /> ^rLn-^;, ,ft /^//Lh ,r,./r'".. "l tl< f/"*4 wifi*^p**,/lr/ ft onrL ,flt'n', r<t,'[f*n / n P l;/ {t o "h*)" t t^ ,/' lo'- ./o**', t^,.J*[u; :' l)1"*$[t ri.errY=r/x:--au/ r- ;lna+b5 ?o,uf .th{'. (,\-:+cl4k.5. lp+.\rr ko-qSlrc*, w hlus :eALS:gLrn rl'ccrrlhe..r ffo,*a^: r/xAx/t",7"1k w' oL,^/,1 tb=volrv,q tktrATAAPttrhn'"-t- rlrr*tt, LV /V;AV/v;FV; + AtI3A uniform beam of mass m6 and length / supports blocks withfiurssos rzl and m2 at two positions. The beam rests on two knifeedges. For what value of.x will the beam be balanced at P suchttrit ttre normaf force at O is zero? (Use m-b for m6' m-l for m6m 2 for m2, L for /, and d as appropriate in your equation-L--,Lel,, l^f., fwsw oL,,-/ r /rft:,L it fi- pur,t4h- nf'{u^ fr"t){r.=-t(We W.,r"'l fi+ *,tl*-Al rutll - *,X x = o' t ,u[^;t(^ No = of .r^i\ x {N(^,1' tALt) { * *,X {l\VH-r1Find the nuss m ofthe countsrweight neoded to balance the I j00kg ftuck on the incline. Assume all pulleys are frictionless andmasslcss(C. - r,u1/lt) + Tr 'o2T : Pt,? t,\ gr.LAr^- ^,<^', :TrIt{-- --- ]rJr\Fr. {-tth } f6x{rAs1l-t\ =-6;t s:'{('l?? t<U5One end ofa uniform 4 m long rod ofweight Q is supportcd by a cable. The other endrests against the wall, where it is held by friction. The coefficient of static friction betweenthe wall and the rod is p" = 0,5. Determine the minimum di$ance x from point I at whichan additional weight f" (the sarn€ as the weight of thc rod) can be hung without causingthe rod to slip at pint A.Uz3)'fr= '.'sL' 1'*.t) (F^=-o #> N-Tcolb:o-)') €Ft ="/JrcrV -'Fl + Tr'\n8- : oT (s,h$ *f, rosg ) " 'F'ftD^=" -Ft* -rti-troE +Ts,ttSLve,=rp2 9,\9A'/,N i'ri h/*tQ'VTl,qF = otr+-Lr)+LT- sth F-/z +lzlr-;\:olt s,qF.fi\^t tfr co tsX:+JLltrsilht +f sot}IAssume Young's modulus for bone is 1.50 x 1010 N,/m2.The bone breaks if stress greater than 1.50 x 108 N7m2 isimposed on it. (a) What is the maximum force that canbe exerted on the femur bone in the leg if it has a mini-mum effective diameter of 2.50 cm? (b) If this muchforce is applied compressively, by how much does the25.0-cmJong bone shorten?F:q,) t'f ors* (/,) "'I) sfurs : Y (t+^u\ =tr.(ry'=ry,;(,-r, rct N/*"'\( o.zro u)f .Jo rlo't N/^,rrz?l.reN?A child slides across a floor in a pair of rubber-soledshoes. The friction force acting on each foot is 20.0 N.The footprint area of each shoe sole is 14.0 cm2, and thethickness of each sole is 5.00 mm. Find the horizontaldistance by which the upper and lower surfaces of eachsole are offset. The shear modulus of the rubber is3.00 MN,zm2.+/qTrwu ft, /'/'*'4b'^ * Jt{-" ^ooln/urs,rk"- lh*w br /^lttlrrcq
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