Pisiks 71 Prob Sets

8
Supplementary Problems 5.12 As shown in Fig. 5-13, two people sit in a car that weighs 8000 N. The person in front weighs 700 N, while the one in the back weighs 900 N. Call L the distance between the front and back wheels. The car's center of gravity is a distance 0.400L behind the front wheels. How much force does each front wheel and each back wheel support if the people are seated along the centerline of the car? Ans. 2.09 kN, 2.71 kN 5.13 Two people, at the ends of a uniform beam that weighs 400 N, hold the beam at an angle of 25:08 to the horizontal. How large a vertical force must each person furnish to the beam? Ans. 200 N 5.14 Repeat Problem 5.13 if a 140-N child sits on the beam at a point one-fourth of the way along the beam from its lower end. Ans. 235 N, 305 N 5.15 As shown in Fig. 5-14, the uniform, 1600-N beam is hinged at one end and held by a tie rope at the other. Determine the tension F T in the rope and the force components at the hinge. Ans. F T 0:67 kN, F RH 0:67 kN, F RV 1:6 kN 5.16 The uniform beam shown in Fig. 5-15 weighs 500 N and supports a 700-N load. Find the tension in the tie rope and the force of the hinge on the beam. Ans. 2.9 kN, 2.0 kN at 358 below the horizontal 64 EQUILIBRIUM OF A RIGID BODY UNDER COPLANAR FORCES [CHAP. 5 Fig. 5-13 Fig. 5-14 Fig. 5-15 5.17 The arm shown in Fig. 5-16 supports a 4.0-kg sphere. The mass of the hand and forearm together is 3.0 kg and its weight acts at a point 15 cm from the elbow. Determine the force exerted by the biceps muscle. Ans. 0.13 kN 5.18 The mobile shown in Fig. 5-17 hangs at equilibrium. It consists of objects held by vertical strings. Object 3 weighs 1.40 N, while each of the identical uniform horizontal bars weighs 0.50 N. Find (a) the weights of objects 1 and 2, and (b) the tension in the upper string. Ans. (a) 1.5 N, 1.4 N; (b) 5.3 N 5.19 The hinges of a uniform door weighing 200 N are 2.5 m apart. One hinge is a distance d from the top of the door, while the other is a distance d from the bottom. The door is 1.0 m wide. The weight of the door is supported by the lower hinge. Determine the forces exerted by the hinges on the door. Ans. The horizontal force at the upper hinge is 40 N. The force at the lower hinge is 0.20 kN at 798 above the horizontal. CHAP. 5] EQUILIBRIUM OF A RIGID BODY UNDER COPLANAR FORCES 65 Fig. 5-16 Fig. 5-17

Transcript of Pisiks 71 Prob Sets

Page 1: Pisiks 71 Prob Sets

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0123 !" "#$%& '& (')* +,-./ 0%$ 12$132 "'0 '& 4 546 0#40 %2')#" 7888 9* :#2 126"$& '& ;6$&0 %2')#" <88 9/ %#'32

0#2 $&2 '& 0#2 =45> %2')#" ?88 9* @433 ! 0#2 A'"04&52 =20%22& 0#2 ;6$&0 4&A =45> %#223"* :#2 546B" 52&026 $;

)64C'0D '" 4 A'"04&52 8*E88! =2#'&A 0#2 ;6$&0 %#223"* F$% GH5# ;$652 A$2" 245# ;6$&0 %#223 4&A 245# =45>

%#223 "H11$60 '; 0#2 12$132 462 "2402A 43$&) 0#2 52&0263'&2 $; 0#2 546I "#$% J*8? >9/ J*<- >9

0124 :%$ 12$132/ 40 0#2 2&A" $; 4 H&';$6G =24G 0#40 %2')#" E88 9/ #$3A 0#2 =24G 40 4& 4&)32 $; J+!8! 0$ 0#2

#$6'K$&043* F$% 346)2 4 C260'543 ;$652 GH"0 245# 126"$& ;H6&'"# 0$ 0#2 =24GI "#$% J88 9

0125 L21240 M6$=32G +*-. '; 4 -E8,9 5#'3A "'0" $& 0#2 =24G 40 4 1$'&0 $&2,;$H60# $; 0#2 %4D 43$&) 0#2 =24G ;6$G

'0" 3$%26 2&A* "#$% J.+ 9/ .8+ 9

0120 !" "#$%& '& (')* +,-E/ 0#2 H&';$6G/ -N88,9 =24G '" #'&)2A 40 $&2 2&A 4&A #23A =D 4 0'2 6$12 40 0#2 $0#26*

O2026G'&2 0#2 02&"'$& !" '& 0#2 6$12 4&A 0#2 ;$652 5$G1$&2&0" 40 0#2 #'&)2* "#$% !" ! 8!N< >9/

!#$ ! 8!N< >9/ !#% ! -!N >9

0126 :#2 H&';$6G =24G "#$%& '& (')* +,-+ %2')#" +88 9 4&A "H11$60" 4 <88,9 3$4A* ('&A 0#2 02&"'$& '& 0#2 0'2

6$12 4&A 0#2 ;$652 $; 0#2 #'&)2 $& 0#2 =24G* "#$% J*? >9/ J*8 >9 40 .+! =23$% 0#2 #$6'K$&043

NE PQRSTSULSRV W( ! LSXSO UWOY R9OPL @WMT!9!L (WL@PZ [@F!M* +

7891 0:24

7891 0:25 7891 0:20

012; :#2 46G "#$%& '& (')* +,-N "H11$60" 4 E*8,>) "1#262* :#2 G4"" $; 0#2 #4&A 4&A ;$6246G 0$)20#26 '" .*8 >)

4&A '0" %2')#0 450" 40 4 1$'&0 -+ 5G ;6$G 0#2 23=$%* O2026G'&2 0#2 ;$652 2\2602A =D 0#2 ='521"

GH"532* "#$% 8*-. >9

012< :#2 G$='32 "#$%& '& (')* +,-< #4&)" 40 2]H'3'=6'HG* S0 5$&"'"0" $; $=^250" #23A =D C260'543 "06'&)"* W=^250 .

%2')#" -*E8 9/ %#'32 245# $; 0#2 'A2&0'543 H&';$6G #$6'K$&043 =46" %2')#" 8*+8 9* ('&A _&` 0#2 %2')#0" $;

$=^250" - 4&A J/ 4&A _'` 0#2 02&"'$& '& 0#2 H1126 "06'&)* "#$% _&` -*+ 9/ -*E 9a _'` +*. 9

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A$$6/ %#'32 0#2 $0#26 '" 4 A'"04&52 ( ;6$G 0#2 =$00$G* :#2 A$$6 '" -*8 G %'A2* :#2 %2')#0 $; 0#2 A$$6 '"

"H11$602A =D 0#2 3$%26 #'&)2* O2026G'&2 0#2 ;$652" 2\2602A =D 0#2 #'&)2" $& 0#2 A$$6* "#$% :#2

#$6'K$&043 ;$652 40 0#2 H1126 #'&)2 '" E8 9* :#2 ;$652 40 0#2 3$%26 #'&)2 '" 8*J8 >9 40 <?! 4=$C2 0#2

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@F!M* +b PQRSTSULSRV W( ! LSXSO UWOY R9OPL @WMT!9!L (WL@PZ N+

7891 0:26

7891 0:2;

Page 2: Pisiks 71 Prob Sets

013> :#2 H&';$6G =46 "#$%& '& (')* +,-7 %2')#" E8 9 4&A '" "H=^2502A 0$ 0#2 ;$652" "#$%&* ('&A 0#2 G4)&'0HA2/

3$540'$&/ 4&A A'6250'$& $; 0#2 ;$652 &22A2A 0$ >221 0#2 =46 '& 2]H'3'=6'HG* "#$% 8*-- >9/ 8!N7) ;6$G

6')#0 2&A/ 40 E?!

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6$12* "#$% 8*-? >9/ 8*.< >9/ -E!

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0#40 '" 8*J8 $; 0#2 32&)0# ;6$G 0#2 0$1* O2026G'&2 0#2 02&"'$& '& 0#2 0'2 6$12 4&A 0#2 5$G1$&2&0" $; 0#2 ;$652

$& 0#2 ;$$0 $; 0#2 34AA26* "#$% !" ! 8!-J >9/ !#$ ! 8!-J >9/ !#% ! 8!J+ >9

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;6'50'$&32"" c$$6 4&A 462 #23A 0$)20#26 =D 4 0'2 6$12* ! +88,9 3$4A '" #23A 40 0#2'6 412\* ('&A 0#2 02&"'$& '&

0#2 0'2 6$12* "#$% 8*J7 >9

NN PQRSTSULSRV W( ! LSXSO UWOY R9OPL @WMT!9!L (WL@PZ [@F!M* +

7891 0:2< 7891 0:2=

7891 0:3> 7891 0:32

0135 ! ?88,9 34%& 6$3326 '" 0$ =2 1H332A $C26 4 +*8,5G #')# 5H6= 4" "#$%& '& (')* +,JJ* :#2 64A'H" $; 0#2 6$3326 '"

J+ 5G* d#40 G'&'GHG 1H33'&) ;$652 '" &22A2A '; 0#2 4&)32 " G4A2 =D 0#2 #4&A32 '" _&` 8! 4&A _'` .8!I _&'#(e

('&A 0#2 ;$652 &22A2A 0$ >221 0#2 6$3326 =434&52A 4)4'&"0 0#2 2A)2 $; 0#2 5H6=/ ^H"0 53246 $; 0#2

)6$H&A*` "#$% _&` 8*N7 >9a _'` 8*++ >9

0130 S& (')* +,J./ 0#2 H&';$6G =24G %2')#" +88 9* S; 0#2 0'2 6$12 54& "H11$60 -788 9/ %#40 '" 0#2 G4\'GHG C43H2

0#2 3$4A !* 54& #4C2I "#$% 8*?. >9

0136 :#2 =24G '& (')* +,JE #4" &2)3')'=32 %2')#0* S; 0#2 "D"02G #4&)" '& 2]H'3'=6'HG %#2& !*- ! +88 9/ %#40 '"

0#2 C43H2 $; !*JI "#$% 8*NE >9

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"#$% 8*+N >9

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%'33 =434&52 0#2"2 ;$652"I _('6"0 f&A '0" 5$G1$&2&0"/ 4&A 0#2& f&A 0#2 ;$652*` d#262 $& 0#2 +,4\'" "#$H3A 0#2

;$652 =2 4113'2AI "#$% !+ ! J.J 9/ !, ! "..7 9a ! ! E-8 9 40 "++!+!a 40 + ! J!-E G

@F!M* +b PQRSTSULSRV W( ! LSXSO UWOY R9OPL @WMT!9!L (WL@PZ N<

7891 0:33 7891 0:34

7891 0:35

Page 3: Pisiks 71 Prob Sets

013= :#2 "$3'A H&';$6G A'"> $; 64A'H" ' "#$%& '& (')* +,JN 54& 0H6& ;6223D $& 4& 4\32 0#6$H)# '0" 52&026* ! #$32 $;

A'4G2026 - '" A6'332A 0#6$H)# 0#2 A'">a '0" 52&026 '" 4 A'"04&52 . ;6$G 0#2 4\32* :#2 %2')#0 $; 0#2 G4026'43

A6'332A $H0 '" !*/* ('&A 0#2 %2')#0 !* $; 4& $=^250 #H&) ;6$G 4 "06'&) %$H&A $& 0#2 A'"> 0#40 %'33 #$3A 0#2

A'"> 40 2]H'3'=6'HG '& 0#2 1$"'0'$& "#$%&* "#$% !* ! !*/#.#'$ 5$" "

N7 PQRSTSULSRV W( ! LSXSO UWOY R9OPL @WMT!9!L (WL@PZ [@F!M* +

7891 0:30

7891 0:36

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7!8 "! ?< >d ! 8!-.% -8. #1;6$G %#'5#

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3D'&) $& 0#2 c40 )6$H&A/ #$% GH5# %$6> '" &22A2A 0$ "04&A '0 $& 2&AI "#$% .*8 >g

613; F$% 346)2 4 ;$652 '" 62]H'62A 0$ 4552326402 4 -.88,>) 546 ;6$G 62"0 0$ 4 "122A $; J8 Gh" '& 4 A'"04&52 $;

78 GI "#$% .*. >9

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4&A 0#2 14C2G2&0 '" N888 9/ #$% ;46 A$2" 0#2 546 ">'A =2;$62 5$G'&) 0$ 62"0I "#$% ?8 G

613= ! 16$0$& #0 ! -!N<% -8"J< >)` 0#40 #4" 4 "122A $; +!8% -8N Gh" 14""2" 0#6$H)# 4 G2043 f3G $; 0#'5>&2""

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0#6$H)# 0#2 f3GI "#$% -!7% -8"? 9

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6142 L21240 M6$=32G N*.8 '; 0#2 A'"04&52 43$&) 0#2 '&53'&2 0$ 0#2 1340;$6G '" <*8 G 4&A 4 ;6'50'$& ;$652 $; -+8 9

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0$043 %$6> A$&2* "#$% _&` E*<8 Vga _'` +*?8 Vg

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@F!M* Nb dWLi/ P9PLXY/ !9O MWdPL <<

Page 4: Pisiks 71 Prob Sets

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J+ Gh" 43$&) 32C23 14C2G2&0 %#2& '0 =2)'&" 0$ ">'A 0$ 4 "0$1/ #$% ;46 %'33 '0 )$ =2;$62 "0$11'&)I

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$11$"2" 0#2 G$0'$&I "#$% _&` -8 Gh"a _'` +*- Gh"

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7891 6:; 7891 6:<

6155 S& (')* N,7/ /- ! +8!8 5G/ /J ! .8!8 5G/ 4&A 0#2 32&)0# 43$&) 0#2 %'62 ;6$G 7 0$ 9 '" E88 5G* ! .*88,) =24A

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6150 S& (')* N,7/ /- ! J88 5G/ /J ! -+8 5G/ 4&A 40 7 0#2 .*88,) =24A #4" 4 A$%&%46A "122A 43$&) 0#2 %'62 $;

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"#$% _&` -8*J Gh"a _'` -8+ Gg

6156 @435H3402 0#2 4C264)2 #$6"21$%26 62]H'62A 0$ 64'"2 4 -+8,>) A6HG 0$ 4 #2')#0 $; J8 G '& 4 0'G2 $;

-*8 G'&H02* "#$% 8*NN #1

615; @$G1H02 0#2 1$%26 $H01H0 $; 4 G45#'&2 0#40 3';0" 4 +88,>) 56402 0#6$H)# 4 #2')#0 $; J8*8 G '& 4 0'G2 $;

N8*8 "* "#$% -*N. >d

615< !& 2&)'&2 2\12&A" E8*8 #1 '& 16$1233'&) 4 546 43$&) 4 32C23 0645> 40 -+*8 Gh"* F$% 346)2 '" 0#2 0$043 62046A'&)

;$652 450'&) $& 0#2 546I "#$% -*?? >9

615= ! -888,>) 4H0$ 064C23" H1 4 .*8 12652&0 )64A2 40 J8 Gh"* ('&A 0#2 #$6"21$%26 62]H'62A/ &2)3250'&) ;6'50'$&*

"#$% <*? #1

610> ! ?88,>) 546 %#$"2 G$0$6 A23'C26" 4 G4\'GHG 1$%26 $; E8*8 #1 0$ '0" %#223" 54& G4'&04'& 4 "024AD "122A $;

-.8 >Gh# $& 4 #$6'K$&043 6$4A%4D* F$% 346)2 '" 0#2 ;6'50'$& ;$652 0#40 'G12A2" '0" G$0'$& 40 0#'" "122AI

"#$% 7JN 9

6102 d4026 c$%" ;6$G 4 62"26C$'6 40 0#2 6402 $; .888 >)hG'&/ 0$ 4 0H6='&2 -J8 G =23$%* S; 0#2 2j5'2&5D $; 0#2

0H6='&2 '" 78 12652&0/ 5$G1H02 0#2 #$6"21$%26 $H01H0 $; 0#2 0H6='&2* 92)3250 ;6'50'$& '& 0#2 1'12 4&A 0#2

"G433 iP $; 0#2 %4026 324C'&) 0#2 0H6='&2* "#$% N. #1

6103 ('&A 0#2 G4"" $; 0#2 346)2"0 =$\ 0#40 4 E8,#1 2&)'&2 54& 1H33 43$&) 4 32C23 6$4A 40 -+ Gh" '; 0#2 ;6'50'$&

5$2j5'2&0 =20%22& 6$4A 4&A =$\ '" 8*-+* "#$% -!E% -8. >)

6104 ! -.88,>) 546 '" 0$ 4552326402 ;6$G 62"0 0$ 4 "122A $; .8*8 Gh" '& 4 0'G2 $; -J*8 " 4" '0 53'G=" 4 -+!8! #'33*!""HG'&) H&';$6G 455232640'$&/ %#40 G'&'GHG #$6"21$%26 '" &22A2A 0$ 4552326402 0#2 546 '& 0#'" %4DI

"#$% -.J #1

@F!M* Nb dWLi/ P9PLXY/ !9O MWdPL <?

Page 5: Pisiks 71 Prob Sets

_&` ZH11$"2 0#40 0#2 ;$652 ! G$C2" A$%& 4 A'"04&52 "Hj5'2&0 0$ 54H"2 0#2 H1126 6')'A "D"02G $; 1H332D" 0$

0H6& $&2 62C$3H0'$&* :#2& 0#2 "G43326 H1126 1H332D H&%'&A" 4 32&)0# $; 5#4'& 2]H43 0$ '0" 5'65HG;262&52/

J$./ %#'32 0#2 346)26 H1126 1H332D %'&A" 4 32&)0# J$#* !" 4 62"H30/ 0#2 5#4'& "H11$60'&) 0#2 3$%26 1H332D

'" "#$602&2A =D 4 32&)0# J$#" J$.* :#2 3$4A !* '" 3';02A #43; 0#'" A'"04&52/ $6

-J#J$#" J$.$ ! $##" .$

%#2& 0#2 '&1H0 ;$652 G$C2" 4 A'"04&52 J$#* :#262;$62/

SV! !A'"04&52 G$C2A =D !

A'"04&52 G$C2A =D !*

!J$#

$##" .$!

J#

#" .!

JJ 5G

-!8 5G! JJ

_'` (6$G 0#2 A404/

!V! !3$4A 3';02A

'&1H0 ;$652!

<88 9

+8 9! -E

4&A

P;;'5'2&5D !!V!

SV!!

-E

JJ! 8!NE ! NE!

!"##$%&%'()*+ ,*-.$%&/

;12> ! G$0$6 ;H6&'"#2" -J8 #1 0$ 4 A2C'52 0#40 3';0" 4 +888,>) 3$4A 0$ 4 #2')#0 $; -.*8 G '& 4 0'G2 $; J8 "* ('&A 0#2

2j5'2&5D $; 0#2 G45#'&2* "#$% .Nk

;122 L2;26 =45> 0$ (')* <,J_( `* S; 4 ;$652 $; J88 9 '" 62]H'62A 0$ 3';0 4 +8,>) 3$4A/ f&A 0#2 SV!/ !V!/ 4&A

2j5'2&5D ;$6 0#2 "D"02G* "#$% E/ J*+/ N-k

@F!M* <b ZSVMTP V!@FS9PZ 7+

7891 ;:6

;123 S& (')* <,</ 0#2 .88,9 3$4A '" =434&52A =D 4 ;$652 ! '& =$0# "D"02G"* !""HG'&) 2j5'2&5'2" $; -88 12652&0/

#$% 346)2 '" ! '& 245# "D"02GI !""HG2 433 6$12" 0$ =2 C260'543* "#$% _&` -88 9a _'` <+*8 9

;124 d'0# 4 52604'& G45#'&2/ 0#2 4113'2A ;$652 G$C2" .*. G 0$ 64'"2 4 3$4A 7*8 5G* ('&A 0#2 _&` SV! 4&A

_'` !V! '; 0#2 2j5'2&5D '" N8 12652&0* d#40 3$4A 54& =2 3';02A =D 4& 4113'2A ;$652 $; +8 9 '; 0#2 2j5'2&5D '"

_6` -88 12652&0 4&A _( ` N8 12652&0I "#$% _&` E-a _'` J+a _6` J*- >9a _( ` -*J >9

;125 d'0# 4 %#223 4&A 4\32/ 4 ;$652 $; 78 9 4113'2A 0$ 0#2 6'G $; 0#2 %#223 54& 3';0 4 3$4A $; NE8 9* :#2 A'4G2026"

$; 0#2 %#223 4&A 4\32 462 .N 5G 4&A E*8 5G/ 62"1250'C23D* O2026G'&2 0#2 !V!/ SV!/ 4&A 2j5'2&5D $; 0#2

G45#'&2* "#$% 7*8/ ?*8/ 7?k

;120 ! 52604'& #DA64H3'5 ^45> '& 4 )4" "040'$& 3';0" 4 ?88,>) 546 4 A'"04&52 $; 8*J+ 5G %#2& 4 ;$652 $; -+8 9 1H"#2"

4 1'"0$& 0#6$H)# 4 A'"04&52 $; J8 5G* ('&A 0#2 SV!/ !V!/ 4&A 2j5'2&5D* "#$% 78/ +?/ <Ek

;126 :#2 "562% $; 4 52604'& 162"" #4" 4 1'05# $; 8*J8 5G* :#2 A'4G2026 $; 0#2 %#223 0$ %#'5# 4 04&)2&0'43 0H6&'&)

;$652 ! '" 4113'2A '" ++ 5G* S; 0#2 2j5'2&5D '" E8 12652&0/ #$% 346)2 GH"0 ! =2 0$ 16$AH52 4 ;$652 $; -J >9 '&

0#2 162""I "#$% .+ 9

;12; :#2 A'4G2026" $; 0#2 0%$ H1126 1H332D" $; 4 5#4'& #$'"0 _(')* <,N` 462 -7 5G 4&A -N 5G* S; 0#2 2j5'2&5D $; 0#2

#$'"0 '" E+ 12652&0/ %#40 ;$652 '" 62]H'62A 0$ 3';0 4 E88,>) 56402I "#$% 8*E7 >9

7N ZSVMTP V!@FS9PZ [@F!M* <

7891 ;:;

Page 6: Pisiks 71 Prob Sets

! "5 ! 012 "013 ! 0#+8 888 G#"$ " 8

! ! #+8 888 G#"$0

"5;6$G %#'5#

UH0 %2 462 0$3A 0#40 0#2 G4"" 2^2502A 126 "25$&A #0#"5$ '" -+88 >)h"/ 4&A "$ 0#2 ;$652 2\2602A $& 0#2 2\12332A

)4" '"

! ! #+8 888 G#"$#-+88 >)#"$ ! <+ V9

!& 2]H43 =H0 $11$"'02 62450'$& ;$652 450" $& 0#2 6$5>20/ 4&A 0#'" '" 0#2 H1%46A 0#6H"0 $& 0#2 6$5>20* :#2

2&)'&2" 54& 0#262;$62 "H11$60 4 %2')#0 $; <+ V9/ "$ 0#2 G4\'GHG G4"" 0#2 6$5>20 5$H3A #4C2 '"

:6$5>20 !%2')#0

4!

<+% -8N 9

?!7- G#"J! <!<% -8N >)

!"##$%&%'()*+ ,*-.$%&/

<132 :D1'5433D/ 4 02&&'" =433 #'0 AH6'&) 4 "26C2 064C23" 4%4D 40 4=$H0 +- Gh"* S; 0#2 =433 '" 40 62"0 G'A,4'6 %#2&

"06H5>/ 4&A '0 #4" 4 G4"" $; 8*8+7 >)/ %#40 '" 0#2 5#4&)2 '& '0" G$G2&0HG $& 324C'&) 0#2 645>20I

"#$% .*8 >)'Gh"

<133 OH6'&) 4 "$5526 )4G2 4 =433 _$; G4"" 8*EJ+ >)`/ %#'5# '" '&'0'433D 40 62"0/ '" >'5>2A =D $&2 $; 0#2 134D26"* :#2

=433 G$C2" $l 40 4 "122A $; JN Gh"* X'C2& 0#40 0#2 'G1450 34"02A ;$6 7*8 G"/ %#40 %4" 0#2 4C264)2 ;$652

2\2602A $& 0#2 =433I "#$% -*E >9

<134 ! E8 888,>) ;62')#0 546 '" 5$4"0'&) 40 4 "122A $; +*8 Gh" 43$&) 4 "064')#0 0645> %#2& '0 "06'>2" 4 .8 888,>)

"040'$&46D ;62')#0 546 4&A 5$H132" 0$ '0* d#40 %'33 =2 0#2'6 5$G='&2A "122A 4;026 'G1450I "#$% J*? Gh"

<135 !& 2G10D -+ 888,>) 5$43 546 '" 5$4"0'&) $& 4 32C23 0645> 40 +*88 Gh"* ZHAA2&3D +888 >) $; 5$43 '" AHG12A

'&0$ '0 ;6$G A'62503D 4=$C2 '0* :#2 5$43 '&'0'433D #4" K26$ #$6'K$&043 C23$5'0D* ('&A 0#2 f&43 "122A $; 0#2

546* "#$% .*<+ Gh"*

<130 Z4&A A6$1" 40 4 6402 $; J888 >)hG'& ;6$G 0#2 =$00$G $; 4 #$1126 $&0$ 4 =230 5$&C2D26 G$C'&) #$6'K$&0433D

40 J+8 GhG'&* O2026G'&2 0#2 ;$652 &22A2A 0$ A6'C2 0#2 5$&C2D26/ &2)3250'&) ;6'50'$&* "#$% -.? 9

<136 :%$ =$A'2" $; G4""2" 7 >) 4&A E >) G$C2 43$&) 0#2 +,4\'" '& $11$"'02 A'6250'$&" %'0# C23$5'0'2" $; -- Gh"?

MWZS:SmP ),OSLP@:SW9 4&A < Gh"?9PX!:SmP ),OSLP@:SW9/ 62"1250'C23D* :#2D 5$33'A2 4&A "0'5> 0$)20#26* ('&A

0#2'6 C23$5'0D ^H"0 4;026 5$33'"'$&* "#$% + Gh"? MWZS:SmP ),OSLP@:SW9

<13; ! -J88,>) )H& G$H&02A $& %#223" "#$$0" 4& 7*88,>) 16$^250'32 %'0# 4 GHKK32 C23$5'0D $; N88 Gh" 40 4& 4&)32

$; .8!8! 4=$C2 0#2 #$6'K$&043* ('&A 0#2 #$6'K$&043 625$'3 "122A $; 0#2 )H&* "#$% .*EN Gh"

<13< :#622 G4""2" 462 13452A $& 0#2 ,,4\'"e J >) 40 , ! .88 5G/ N >) 40 , ! -+8 5G/ 4&A E >) 40 , ! "<+ 5G*

('&A 0#2'6 52&026 $; G4""* "#$% , ! - G

<13= ($H6 G4""2" 462 1$"'0'$&2A '& 0#2 +,,134&2 4" ;$33$%"e .88 ) 40 #+ ! 8/ , ! J!8 G`/ +88 ) 40 #"J!8 G/

".!8 G`/ <88 ) 40 _+8 5G/ .8 5G`/ 4&A ?88 ) 40 #"78 5G/ -+8 5G`* ('&A 0#2'6 52&026 $; G4""*

"#$% + ! "8!+< G/ , ! 8!J7 G

<14> ! =433 $; G4"" 0 "'0" 40 0#2 5$$6A'&402 $6')'& %#2& '0 2\13$A2" '&0$ 0%$ 1'252" 0#40 "#$$0 43$&) 0#2 +,4\'" '&

$11$"'02 A'6250'$&"* d#2& $&2 $; 0#2 1'252" _%#'5# #4" G4"" 8*J<80` '" 40 + ! <8 5G/ %#262 '" 0#2 $0#26

1'252I _&'#(e d#40 #4112&" 0$ 0#2 G4"" 52&026I` "#$% 40 + ! "JN 5G

@F!M* 7b SVMRTZP !9O VWVP9:RV ?<

<142 ! =433 $; G4"" 0 40 62"0 40 0#2 5$$6A'&402 $6')'& 2\13$A2" '&0$ 0#622 2]H43 1'252"* !0 4 52604'& '&"04&0/ $&2

1'252 '" $& 0#2 +,4\'" 40 + ! E8 5G 4&A 4&$0#26 '" 40 + ! J8 5G/ , ! "N8 5G* d#262 '" 0#2 0#'6A 1'252 40 0#40

'&"04&0I "#$% 40 + ! "N8 5G/ , ! N8 5G

<143 ! J*8,>) =3$5> $; %$$A 62"0" $& 4 3$&) 04=320$1* ! +*8,) =H3320 G$C'&) #$6'K$&0433D %'0# 4 "122A $; -+8 Gh"

'" "#$0 '&0$ 0#2 =3$5> 4&A "0'5>" '& '0* :#2 =3$5> 0#2& "3'A2" J<8 5G 43$&) 0#2 04=32 4&A "0$1"* _&` ('&A 0#2

"122A $; 0#2 =3$5> ^H"0 4;026 'G1450* _'` ('&A 0#2 ;6'50'$& ;$652 =20%22& =3$5> 4&A 04=32*

"#$% _&` 8*.< Gh"a _'` 8*8+J 9

<144 ! J*8,>) =3$5> $; %$$A 62"0" $& 4 04=320$1* ! <*8,) =H3320 '" "#$0 "064')#0 H1 0#6$H)# 4 #$32 '& 0#2 04=32

=2&240# 0#2 =3$5>* :#2 =H3320 3$A)2" '& 0#2 =3$5>/ 4&A 0#2 =3$5> c'2" J+ 5G 4=$C2 0#2 04=320$1* F$% ;4"0 %4"

0#2 =H3320 )$'&) '&'0'433DI "#$% 8*NE >Gh"

<145 ! N888,>) 06H5> 064C23'&) &$60# 40 +*8 Gh" 5$33'A2" %'0# 4 E888,>) 06H5> G$C'&) %2"0 40 -+ Gh"* S; 0#2 0%$

06H5>" 62G4'& 3$5>2A 0$)20#26 4;026 'G1450/ %'0# %#40 "122A 4&A '& %#40 A'6250'$& A$ 0#2D G$C2 'GG2A'4023D

4;026 0#2 5$33'"'$&I "#$% N*< Gh" 40 J<! &$60# $; %2"0

<140 d#40 4C264)2 62"'"0'&) ;$652 GH"0 450 $& 4 .*8,>) G4"" 0$ 62AH52 '0" "122A ;6$G N+ 5Gh" 0$ -+ 5Gh" '&

8*J8 "I "#$% <*+ 9

<146 ! <*88,) =H3320 G$C'&) #$6'K$&0433D 40 J88 Gh" "06'>2" 4&A 14""2" 0#6$H)# 4 -+8,) 0'& 54& "'00'&) $& 4 1$"0*

gH"0 4;026 'G1450/ 0#2 54& #4" 4 #$6'K$&043 "122A $; -78 5Gh"* d#40 %4" 0#2 =H3320B" "122A 4;026 324C'&) 0#2

54&I "#$% -N- Gh"

<14; :%$ =433" $; 2]H43 G4""/ G$C'&) %'0# "122A" $; . Gh"/ 5$33'A2 #24A,$&* ('&A 0#2 "122A $; 245# 4;026 'G1450 ';

_&` 0#2D "0'5> 0$)20#26/ _'` 0#2 5$33'"'$& '" 126;2503D 234"0'5/ _6` 0#2 5$2j5'2&0 $; 62"0'0H0'$& '" -h.*

"#$% _&` 8 Gh"a _'` 245# 62=$H&A" 40 . Gh"a _6` 245# 62=$H&A" 40 - Gh"

<14< ! ?8,) =433 G$C'&) 40 -88 5Gh" 5$33'A2" #24A,$& %'0# 4 "040'$&46D -8,) =433* O2026G'&2 0#2 "122A $; 245#

4;026 'G1450 '; _&` 0#2D "0'5> 0$)20#26/ _'` 0#2 5$33'"'$& '" 126;2503D 234"0'5/ _6` 0#2 5$2j5'2&0 $; 62"0'0H0'$& '"

8*?8* "#$% _&` ?8 5Gh"a _'` 78 5Gh"/ -*7 Gh"a _6` 7- 5Gh"/ -*< Gh"

<14= ! =433 '" A6$112A $&0$ 4 #$6'K$&043 c$$6* S0 6245#2" 4 #2')#0 $; -EE 5G $& 0#2 f6"0 =$H&52/ 4&A 7- 5G $& 0#2

"25$&A =$H&52* ('&A _&` 0#2 5$2j5'2&0 $; 62"0'0H0'$& =20%22& 0#2 =433 4&A c$$6 4&A _'` 0#2 #2')#0 '0 4004'&"

$& 0#2 0#'6A =$H&52* "#$% _&` 8*<+a _'` EN 5G

<15> :%$ 'A2&0'543 =433" H&A26)$ 4 5$33'"'$& 40 0#2 $6')'& $; 5$$6A'&402"* U2;$62 5$33'"'$& 0#2'6 "54346 C23$5'0D

5$G1$&2&0" 462 #;+ ! E8 5Gh"/ ;, ! 8` 4&A _;+ ! ".8 5Gh"/ ;, ! J8 5Gh"`* !;026 5$33'"'$&/ 0#2 f6"0 =433 '"

"04&A'&) "0'33* ('&A 0#2 "54346 C23$5'0D 5$G1$&2&0" $; 0#2 "25$&A =433* "#$% 1+ ! -8 5Gh"/ 1, ! J8 5Gh"

<152 :%$ 'A2&0'543 =433" 064C23'&) 14643323 0$ 0#2 +,4\'" #4C2 "122A" $; .8 5Gh" 4&A 462 $11$"'023D A'62502A* :#2D

5$33'A2 126;2503D 234"0'5433D* !;026 5$33'"'$&/ $&2 =433 '" G$C'&) 40 4& 4&)32 $; .8! 4=$C2 0#2 &+,4\'"* ('&A '0"

"122A 4&A 0#2 C23$5'0D $; 0#2 $0#26 =433* "#$% .8 5Gh"/ .8 5Gh" 40 .8! =23$% 0#2 "+,4\'" _$11$"'02 0$ 0#2

f6"0 =433`

<153 _&` d#40 G'&'GHG 0#6H"0 GH"0 0#2 ^20 2&)'&2" $; 4 J!8% -8+ >) 6$5>20 #4C2 '; 0#2 6$5>20 '" 0$ =2 4=32 0$ 6'"2

;6$G 0#2 P460# %#2& 4'G2A "064')#0 H1%46AI _'` S; 0#2 2&)'&2" 2^250 ;H23 40 0#2 6402 $; J8 >)h"/ #$% ;4"0 GH"0

0#2 )4"2$H" ;H23 =2 G$C'&) 4" '0 324C2" 0#2 2&)'&2"I 92)3250 0#2 "G433 5#4&)2 '& 0#2 G4"" $; 0#2 6$5>20 AH2 0$

0#2 2^2502A ;H23* "#$% _&` J8% -8+ 9a _'` ?7 >Gh"

?7 SVMRTZP !9O VWVP9:RV [@F!M* 7

Page 7: Pisiks 71 Prob Sets

!2 " %<!= ! %<0.!J

:#'" ;6'50'$& ;$652 GH"0 =434&52 0#2 %2')#0 *+ $; 0#2 =3$5> '; '0 '" &$0 0$ "3'1* :#262;$62/

04 ! %<0.!J $6 ! !

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4

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S&"260'&) 0#2 )'C2& C43H2"/ %2 f&A

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?!7- G#"J

#8!.8$#-!+8 G$

%

! E!< 64A#" ! 8!<E 62C#"

!"##$%&%'()*+ ,*-.$%&/

=12; @$&C260 _,` +8*8 62C 0$ 64A'4&"/ _-` E7$ 64A 0$ 62C$3H0'$&"/ _.` <J*8 61" 0$ 64Ah"/ _/ ` -!+8% -8. 61G 0$ 64Ah"/

_0` JJ*8 64Ah" 0$ 61G/ _ 1 ` J*888 64Ah" 0$ A2)h"* "#$% _,` .-E 64Aa _-` JE 62Ca _.` E+J 64Ah"a _/ ` -+< 64Ah"a

_0` J-8 62ChG'&a _ 1 ` --E*N A2)h"

=12< P\162"" E8*8 A2)h" '& _&` 62Ch"/ _'` 62ChG'&/ 4&A _6` 64Ah"* "#$% _&` 8*--- 62Ch"a _'` N*N< 62ChG'&a _6`

8*N?7 64Ah"

=12= ! cD%#223 0H6&" 40 E78 61G* @$G1H02 0#2 4&)H346 "122A 40 4&D 1$'&0 $& 0#2 %#223 4&A 0#2 04&)2&0'43 "122A

.8*8 5G ;6$G 0#2 52&026* "#$% +8*. 64Ah"/ -+*- Gh"

=13> S0 '" A2"'62A 0#40 0#2 $H026 2A)2 $; 4 )6'&A'&) %#223 ?*8 5G '& 64A'H" G$C2 40 4 6402 $; N*8 Gh"* _&` O2026G'&2

0#2 4&)H346 "122A $; 0#2 %#223* _'` d#40 32&)0# $; 0#624A 5$H3A =2 %$H&A $& 0#2 6'G $; 0#2 %#223 '& .*8 "

%#2& '0 '" 0H6&'&) 40 0#'" 6402I "#$% _&` N< 64Ah"a _'` -7 G

=132 :#6$H)# #$% G4&D 64A'4&" A$2" 4 1$'&0 $& 0#2 P460#B" "H6;452 G$C2 '& N*88 # 4" 4 62"H30 $; 0#2 P460#B"

6$040'$&I d#40 '" 0#2 "122A $; 4 1$'&0 $& 0#2 2]H40$6I :4>2 0#2 64A'H" $; 0#2 P460# 0$ =2

N.<8 >G* "#$% -*+< 64A/ EN. Gh"

=133 ! %#223 J+*8 5G '& 64A'H" 0H6&'&) 40 -J8 61G '&5624"2" '0" ;62]H2&5D 0$ NN8 61G '& ?*88 "* ('&A _&` 0#2

5$&"04&0 4&)H346 455232640'$& '& 64Ah"J/ 4&A _'` 0#2 04&)2&0'43 455232640'$& $; 4 1$'&0 $& '0"

6'G* "#$% _&` N*J7 64Ah"Ja _'` -+< 5Gh"J

-87 !9XRT!L VW:SW9 S9 ! MT!9P [@F!M* ?

7891 =:;

=134 :#2 4&)H346 "122A $; 4 A'"> A25624"2" H&';$6G3D ;6$G -J*88 0$ E*88 64Ah" '& -N*8 "* @$G1H02 0#2 4&)H346

455232640'$& 4&A 0#2 &HG=26 $; 62C$3H0'$&" G4A2 '& 0#'" 0'G2* "#$% "8!+88 64Ah"J/ J8*E 62C

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