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Unformatted text preview: p‘ jg: W 7'4 2/3 /2c9!0
7'HAM 13.§2¥ The initial \‘(.eh';:.3ity of the blm‘k in positit‘m A is {30 [11's. Knowingf
that {ha1: <2:1c,fﬁé'im1t 0? kinetic ﬁ‘iction histween the [ﬂock and the‘
piano is M I: 0.30, (interrrm'ze the firm} if fakes far the block to
much 13 with zen; velocity; if {a} 6 = (L {in} E} m 205', b 3
\VX ‘N Fig. 913.321 ‘ 0
wa<ﬂmgm9+w%£ﬂt=rvz .— 3mg» ) %%%%97ﬂ%m«9 m) I >.~3245é_ﬁ_h 31212263 m0 1M) 2 30HA : W" = 1.12%
m )6 31.1%.(3mlOD—M2063 13.125 A truck is traveiing down a road with a 4percent grade at a speed“ of 60 mm when its brakes are apph’ed to slow it down to 20 mi “.E;
An antiskid braking system limits the braking force to a valucéfé
at which the wheels of the truck are just about to slide. Knowing?
that the coefficient of static {fiction between the road and théﬁéj
wheels is 0.60, determine the shortest time needed for the trubk
to slow down. §= 2.2m?  14  my
Woﬁ¢ t<£ﬂh€~ayga6>£1 20“ "329 A iight train made bf two cars travels at A15 milk. Cen‘ A weighs 45 mm; 18 fans; and car 8 weighs IE3 tons. When the brake35 are applied, W , .
‘ A 18 tons 3 15 mm aycqns‘tnnt ‘brglking fbrce $430011)! is applieci in each car. Deter— mine (a) the time required for the train £0 stop after the brakes
p are applied, (I?) the force‘irl thalamplmg behvccn ﬁlm cars whiie
the {min is shawing down” ' ' ‘ x? N Fig. 933.129 ‘0 a
M V91 1’ Ni 4— H : /
a) k f E W: E J“ Why/{2 {M1 :‘x/Al : V31 : Ul If 1 IHECWHQW—wa saws
32,2.A 350OK'2x’4300 .IC 1 1! .7776.
Li 1L\.77é§’ F M
yujooﬂa +»A)>&+ . 70
MBVB 4‘21: 8V7... £1 ‘— * W'BVG.
z": 7, M : ‘ ‘Muﬁ LF+q3r00§f 1 ‘WIBV5l f; “ MUg ﬁLIFFO) _ “mm; : ~— mew. u—____.—"' 1: F 2 HBOO/M mﬂ': 435:0 m1— ggffgfﬁkawh slaw/M
I 1:6? M (V? 360% 'ILI.77'7_S a; ; Hgoon; —360¢.,‘H LL: N _ CoJcL Laue, 000W? grim(01$ f— “ G (“WHICH m1 (,va +0 TE}: sysfemws'iumin‘is released f'nml i‘est.“[)(ziermine the time it
takes far the V(.:§<‘Jcéty UFA to reach i :n/s‘ Negiect Friction and the
mass 0f the glitl‘liﬂys. f“ zumwc ‘ fig. 1913,13: 1‘:
“ L V
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T? "Merk/Jﬁ
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42: mﬂﬂi MAM] ixwﬁ + LUJS‘
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. VAL (MA + 4M5) ZQLW‘AW'Q 10.363] 33.146 At an intersection Car Bwas traveling somh‘and car A was 30° north of east when they slammed into each other, Upon"i:
tigationitwas {mind thzit’after thecrash~the two carslgo
and skidded GET ‘at: an angie of £0“ north of cast. Each b claimed that he was goinggaf the speed limit of 50 km/h :1
he fried to slow doxim but ccmldn't avoid the crash beam
ofhm“ driver was; going 2110f, faster. Knowing that the. masses' ’
A and B were 1500 kg and 1200 kg, respectiveiy, (£6196;
{a} whic?) car was goiug faster, {3}) the. Speed of the fasteme
two cars if the slower car was traveling at the speed limit. Fig. H3346 CarA‘. mp; ml + if = Why{12 x: MAVAC¢D30°~TLK9€ = MAVAlwlob (W. MAVA‘Mwoglﬂk : MAVMMIOU G7 Cuff) mﬂwii: maf/‘BL
2:3 .o_ + Ixi = m5 Vgicooloo (.3)
a: mgvgﬂjat: mﬁvhmmb (q)
p VAL= U51 : V;
m 03 Ha ﬁd‘wwﬁa :06 me (354% ml‘wﬁm
mﬁvAlCCD 30" : MﬁvgmmDerngcmma (5)
MA UMMBDoumﬂvﬂl : MAV1MIOD+M£UZMIO° L6) ﬁohrﬁ 130:“ V2 M 26:1.»th MAVA‘ (103300 : U1 ‘55) [00<W1A,+ng>
MAU4,M300M$\ng 1‘ U2M10°CVMA+M3)
V2: W
Q910°ﬁMK++MIQ
n \jz : MW MW°(MI+*MB> {KM(L Z/Z MAUA.C.§3300 ‘ MﬁVAIMBOa M3VE
@Iaywﬂ m/a"(m m
p
o v " .
WAUAlCdjaC) M10” = mvﬁ,m300m/&D— wrva 93:00
‘ \\ .   0
VA,(mmaoDM/00~m4m30°w/&?>  *‘MaVsrmw 0 __ 0
w"; Val M z m W m, MA (mja‘iwao vwaaamw‘) {500,13 (Casawwhma/wﬂ) VAN: Val X TRUE); )VA.>\)5(' n in) V6}: 50 [rm/hr VM: 2.30% Earn/w “W Km/w /* ('W ball moving at £1 speedfo'f 3 a 250—gpiate 511p
:ported by Springs. Aésmn'ing that fie energy is'hs‘t in the impact,
kietermineam) the velocity" of the'ball iiﬁﬁkdiafék after impact,
(19) the impulse of the three exerted by the plate on the bell. 1+. Fig. 3313.151 No efoermJ ‘metdsesJ So W+m £3
WSQUVbﬂ. f’dso ed/lelfabt 13 CWLEQV‘KW—tx I D;,¢c,k;m WJI MP '02 @st enema w Wm be, range [q’rer. l W‘i‘m 0)
m anti/77 6J5+I+J~¢ {4453 MILO 2) ML vbll "Z,
Vn
ML V1921 1+ WLP (Vb: Vbz\] w 2 M52} + 235$
W Mr 3 1/ (be'lVblVLl + ng ...
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This note was uploaded on 05/17/2011 for the course EGM 3400 taught by Professor Matthews during the Summer '08 term at University of Florida.
 Summer '08
 Matthews
 Dynamics

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