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CWBMouseStroke61G' 69NQdg}CPage2CWBText:-:-~Friction is a force which acts between two bodies which are in contact, when one body tries to move relative to the other"Arial*CWBTextfufuw>The force of friction is proportional to the normal reaction"Arial CWBMouseStrokeGK !    !%(,/369;>?@A@@@CWBMouseStroke & CWBMouseStroke$ CWBMouseStroke ,& K ,< .-----../0134689:;;<;:9875320////01368;=?ACDEEECWBMouseStroke ,2T ,u ,,!,$,&+)+,+/*2*6)9(<(@'C'F&I%K%M%N%N%N%NCWBMouseStroke J]  ף + "$&)+.135788 8"8$6&5(3*2,0-..-/+0*0)1)2)2*3+4,6.80:2=4@6C9G<J>N@QBTCVDWDWCWBMouseStroke c]c ddddefgiknqtx{CWBMouseStroke`Zk`a aaaabbcccdddeeeeCWBMouseStroke{s{ {{{{zzzzz{{{{zzzCWBMouseStroke~j CWBMouseStroke{u{ |||||}}~~~~CWBMouseStrokes6 :   !"}#|#{$z${${#}#~""!!!!"#$&')*+-../////..//000CWBMouseStrokeAs3mGAs7 AtAtAuAvAx@{?~>=<;:::::::CWBMouseStroke;r5hY;r "<r=p?oAoDoGpIrKtMvMyM{M}KIGECB@@@@ABDEGIKMOQSSCWBMouseStrokeVPV WWXXYYZZ[[[[[[[[[ZZZZZ[[\\]^_``aabbbbccccdddeeffghhiijjjkkkkkkkkllmnopqrstuuvvvvvuutttssssssssssrrrrsstuvwwxyz{|}~CWBMouseStroke +CWBMouseStrokeg CWBMouseStroke  CWBMouseStroke3&:83 444332110/.---../00CWBMouseStrokeD4`8D! 0DDCBBA@?>=<;;;<=>?@ABBCDEFHJLNOPQPONMLLLNPSUXZZZCWBMouseStroke0)M80<% 0147<BGGGCWBMouseStrokey8O' 1CWBMouseStroke8, CWBMouseStroke 8. CWBMouseStroke!80 CWBMouseStroke"80 CWBMouseStroke#8k2 CWBMouseStroke$83 CWBMouseStroke%84 CWBMouseStroke& 8 8       CWBMouseStroke'@89 6 "####"!  !$%')*++,,,,,,,,-./012345567899::::CWBMouseStroke( 8= CWBMouseStroke)?5G8?> @@@??>==<<=>?@AACWBMouseStroke*@9P8@? @CFJJJCWBMouseStroke+zs8zF zzzzzz{|~CWBMouseStroke,8H CWBMouseStroke-8I CWBMouseStroke.8K CWBMouseStrokeZ\9DCWBMouseStroke184P CWBMouseStroke4 8"S CWBMouseStroke58ZT  CWBMouseStroke6@8EU F !"##"! !#&)+-.///..--../123467899::::::CWBMouseStroke7 8Y CWBMouseStrokeK CWBMouseStrokeUVX CWBMouseStrokefh CWBMouseStrokegh Gx  8S8V\8_hCPagerCWBTextiU9U9{<BIf a block of weight 100 N rests on a rough plane inclined at an angle A to the horizontal, where Tan A = 0.75, and the coefficient of friction = 0.4 find the least force parallel to the plane required to prevent the block slipping. 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(4AM[hu{wsssCWBMouseStrokekeM_D2_eM]fNfNfNfMfMgMgMgMhMhMiMjMjMkMlMnMoMpMrMtMuMwMyM{M~NMMMMMMMMMMMMLLLLLLLLLLLLLKKKKKKK KLLL%L,M4M;MBNJNQOYOaOiOqPyPPPPPQQQQQRRSTVWX#Y,Y,Y,YCWBMouseStrokel$?o$7%%%%%&&&''(()**+,,-.//011233455667777888888888889999988CWBMouseStrokem%qo%X^&')+,.1369<?BFIMPTWZ^acfhjl~n}p|q{r{sztzuzvyvywywyxxxxxxxxxxxxxxwxwxwxwxwxwxwxwxwywywzw{w|w}x~xyyyzzz{{||}~CWBMouseStroken71o7A+88888889::;<>?ACEHJMPSVY\_cfimpswz}CWBMouseStrokepE%KsEo?7EEEEEEDDDCBA@?=<:975421/..-,,,--./01345789:;<==>>>>>>>>CWBMouseStrokeq>8Js>H?????????@@@AABBCCCDDDDDDCCCCWBMouseStroker>7Es>iM>>>????>>>>>>>>>>>>CWBMouseStroketaZk7y aKabbbbbbbbbbbbbbbbbbaaaaaaaabbbbbbbbcccccccdd d dddddddd d#d%d'd(d*e+e-e.e/d/d0d1d1d1d1d1d1d1d1d0d0d0CWBMouseStrokeu] Vt:y ] G(^ ^ ^ ] ] ] ] ] ] ]!^"^#^$^%_'_(`*`+a-b.b0c1c2c3d4d4d4e4e3f3g2h0i.j,k*l(m&n$n"n"CWBMouseStrokev@8Gy @@@AAAAA@@@??? ? ? ? ? ? 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"&*. 2 6;AFLRX_elsy #(CWBMouseStroke (/ (غ 1 ) ( ( ''''''''' '$'(','0(5(:(?(D(I(O(T(Z(`(f(l(s(y())))))))(((((('''&&CWBMouseStroke81M$8> +9999998999:;<=>? @ ABCDEEFFF G GGGGGGGGGGGGGGGGCWBMouseStroke:3 L:k :;=>@BDFFFCWBMouseStroke 'CWBMouseStroke0{*I0' 11234579;<>?@ABBCCCCCCCCCCBBCWBMouseStroke=6R=Y =>?@BDFHJLLLCWBMouseStrokeXKbX XXXWVUTTTUVWXZ[\\\\[ZYXVUTSSRSSCWBMouseStrokeUOhUN VWY[^`bbbCWBText ##pTrigonometry tells us"Arials!CWBMouseStrokesl{*sTItttCWBMouseStrokef^nf:ffgggggCWBMouseStroke{s{:{||||||CWBMouseStroke{s{M:{{|||||CWBMouseStrokeXLXj:XWVUTTTTTUVXZ\_beimptx{}}}CWBMouseStrokendnX:nnopqsuwyz{|||{ywuspnmlllmnnCWBMouseStrokejajɎ:kjjiijklmoqsuwyz|}~~~~~~CWBMouseStrokeP֑:(~|yvsokgd`][YXXXY[ ] ` c f i l o r u x z{|}}}||CWBMouseStrokepfxp": qpppoo n n nCWBMouseStroke tl:| t:!u!u"u"u$u%u'u)u+u-u/u1u3t3t3tCWBMouseStroke"jb;r"j: "k"k#j$j&j'j)j,j.k1k4k4k4kCWBMouseStrokeTUGMjoTUW:UUUVUWTXTYTZS[R\R^Q_PaPbPcOeOePfPgQgRhShThVhXhZh\h^h`hahbhchchCWBMouseStroke]aQYdt]a: ]a]b\c\d[e[g[hZiZjZlYmYmYmCWBMouseStrokeAu:m|}Au:BvBvBvCvDvEvFvHvJvLvOuSuVuZu^ubufuiumupusvuvuvuvCWBMouseStrokeUJxeU.:(VVUUTTSSSSTUVWXZ[\]]^^^^^^]]\[ZYXVUTSSRRCWBMouseStrokeV|OtlV|: W|X|Y}[}\}^}`}b}d}e}e}e}CWBMouseStrokelv8;!CWBMouseStrokemv;CWBMouseStrokenv;*CWBMouseStrokeov`;%      CWBMouseStrokepv};     CWBMouseStrokeq 5v ; !#%')+,....CWBMouseStroker 2v ̹; ! !"$&(+++CWBMouseStrokesE=XvEZ;1FGHIJLMMNOOOOONNMLKKJIIIIJJKLMNOPQQQQQPONMLKJHGEECWBMouseStroketB:uvB;BEHKNQUY]`dgjlnnCWBMouseStrokeO?`O<1PPPOOOOONNNNNOPPQSTUVWXXYYYYYXXWVVUTRQONMKJIHHGHHCWBMouseStrokeMEgM<MMMMMNNOPQRTVXZ[]^_```CWBMouseStrokeJBRJ#< KKKKKKJJJCWBMouseStrokeJBRJ(<KKJJJJNG*{osy~ #*f#g#vxCPageCWBMouseStroke*$r0*=bGbGcGcGcGdFdFdFeEfEgDhDjCkBmAo@r?u>x<|:8631.+($!  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