Online Homework 9 Solutions

# Online Homework 9 Solutions - Hanging Meter Stick A meter...

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Unformatted text preview: Hanging Meter Stick A meter stiek [L = I In) with mass M = “.415 kg is supported by two strings, one at the I] em mark and the ether at the 94 em mark. a] What is the tension in the string at t] em? b] What is the tension in the string at 94 em? e] New the sting at I] em is cut. What is the tensien in the remaining string immediately ﬂiereat'ter'? Tl C] TL f' E7 {7—H /:L ma ij ZF :0 1+ Ta *mfzf 9 it“: E 5726‘ :0 {mg}- P'eaﬁi' L. Tr “"5 a: Hanging Sign :-h&tx\\%ﬁ§m¢ﬁtmﬂﬁﬂ .-:-'~‘.:I::I:::.'\\‘i‘.:2 W/ f;— A sign has a mass aflliﬁﬂ kg. at height'h i 1' "the a width w = 4 m. a is held by a light red ei'length 5 m that is pcrpendte-ularter'a/mugh wall. A guy wire at 23“ tn the herizental holds the sign to the wall. Note that the distance fret-n the left edge ef the sign to the wall ﬁg) (:1 Suppose we :ely upon friction between the wall anti the red to hold up the sign [there is he hinge attaching the red te the wall). What is the smallest vahle of the coefﬁcient at friction is. sueh that the sign will remain in place? 8:23” cliiﬂ'l W; 4m 0’}: iCﬁDi’ta C) ﬁ_ 0 (a £3 -‘ \$5,». +T<£stn9 r—MS :- O =9 If m.r{&%%)ﬂTS'ih8(A+W):O % “Mo Wbﬁ'mh ‘I‘D ‘BL 1305.3:th my. mega; £5 .4; Pg.“ L 1 ﬁ 234%.: M629!in g; )1? m9 '«lfd-ws' w 7 42mg )55/ ’chle )Jj min 3 W231: (+- :. O_Zgb H 2+LF I Two Blocks and Spring sprin g A small block of mass m 1.1 kg sits on top of a block of mass M = 11].] kg. The lower block is attached to a spring with spring constant k: 153 Him and can slide on a horizontal frictionless surface as shown in the diagram. The coefﬁcient of static friction between the blocks is ,tt= 0.4 . 1What is Am“, the ntaximutt‘t possible amplitude ttfsimplc harmonic motion ol'tltc spring— hlecks system if no slippage is to occur hetwecrt the hlocks'? _.-I- tin; n.'73‘!at.tr;.i;--3‘u'ta~t 1ch:KL.E__E:‘IL_LIME_IL5W. gum [J ﬂ'tiiaw _'_ _- [C I i-‘Tﬁlﬂ‘tl hunk L21.Q3L”(ic.-"r 'IEIT'VLL‘ 'Ii'iltHi-NLJ', I’l‘tfs't - _'-‘!—i- Phil C’F‘rfﬁ -_' "p .‘t‘r-l M +3" i'l'iﬂdL -“ ICE Liv-this LU‘Il-N'va (it ."I‘t 1|. }- "ﬂu-V Quail-L "1';"”‘_i'“5"‘ chis‘u-Cﬂa‘t “lch. "lint: lain-cl; to hos {ELKLL\) iii‘rh’w'ﬁliirk “iJi-‘i C-L‘lL-t-al '5 its “he; LIFER?" (L at bull's“ 33L? ;. I'i‘l'lt. Box and Spring A box ufmass 3 kg siidﬁ across a frieﬁenless surface at an initial speed 1.5 mfs into a relaxed spring of spring constant I59 Him. Haw long is the box in eenieet with the spring hefere it leaves in the uppesite direction? Lax-a 5:50 be m. Faxed ug: m ism mm m ifs? Wm "hm Exam-ﬁg r L.) m epuhbﬁm Pﬁkﬁﬁ‘h, (“ﬂ-1112 has. ism m, in Ewer mm" Tm, (Lanai-1%) m mp E5” L” W 5““ Ci lymph [LNqu WLWC ' Lka in Win were TL“ QW‘Q‘ﬁW PM ‘b m9, secqu “mi; 'Jr will! tag? ﬂamnﬁ ii {ML/.1 Tan Cum} TM era-vﬁé as, m in mm». H The-.1 me im (Kin—d.— is Lexi- wig-aV—El—L-‘i‘ 141,“)q GEN/{ﬂ Simple Pendulum | . | A pcndulum has a periuti of LB 5. at} Its 111355 is doublad. What is its period now? 1:} Its length is doubled. What is its pcriixl new? The {irigin a] pendulum is taken to a plant where g = 16 mfsz. c] What is its [Jﬁl'lﬂd on that planet? The original pendulum is rclcasad ﬁ'um rest at an angle E = 13“. d} What is its maximum angular amalaratinn? 1': ’23thi L _.___._... ‘3 a) v.2: 39 m; 1E : 22.th C5 ht..— .'. TD II 1% a, If. S _ o Trad Cl) 05m '2 ll?) ' E; l | -: mm. CMVBulOJ Qcmiﬂégliﬁr Vibrating Board ‘\ ' 3%??? l l A diving board undcrgucs simple harmonic mution with a ﬁ'aquancy ufﬁ cycles per second. What is the maximum amplitude: with which 1hr: and ofthe board can vibrate in order than. a pebble: placed than: not leave the board during the: oscillation? .J we mg} The BELLE-ELM Tide, bmé 12:: new Mesa 3: i=3 arr/gr Mimuurn umekisﬁﬂiiw 9i]— CUJ Uilblﬂi— Lﬁ SHM; 1... than; : ream if: "I? in (4:? [1 :ﬁ .50 at: 7% r4 ...
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## This homework help was uploaded on 03/27/2008 for the course PHYS 221 taught by Professor Herrera-siklody during the Fall '08 term at Iowa State.

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Online Homework 9 Solutions - Hanging Meter Stick A meter...

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