Online Homework 4 Solutions

# Online Homework 4 Solutions - Awnurdan...

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Unformatted text preview: Awnurdan biockoftnassm=9kgsstattsfrnm mtunan inclinedplana slopudatan angle 9 frum the horizontal. The black is originally located in: hum tha- buttum ﬁfths plane. If the block, tmdargoing constant mlmtiun dawn the ramp. slides to the buttum in t - 2 s, and H = 313“. what in ﬁ1emagnitud¢ ufthe kinetic frictional force in: the block? I L nﬂ‘l " I it. 0: Grn+ c: + Lattaa-t a»: 1-6 “4P“ Conveyor Belt *3 L. x A bar. uf‘mass m = 1.5 kg is dropped vertically onto ammreymr belt which is muving with a whatant spmd v - 6.2 nus. The mefﬁci-t ufkinutiu ﬁ'iution hﬂwm the hunt and the convnwr halt in: m; = 9.11. How mmh time: dues'it take before the hunt attains the same speed as ﬁle convawr hail? M0m\( aw 0%: Wad Law) i, 15;}: o 'TLn bang W’r‘l maﬁa *D‘Lse d1=61~vi4 Bombm-iw cit “AWJFWJ W bet in (“Wig baukuswés- HAZEL; 3mm 591?. (+5 m \QJGHIESD. 35am 'Emﬁrﬂ'l «3m ”mm ““6“ Twn Blocks with Friction _-i-—_~" Ableekefmase ml =2ltga|1dableekefmassm1=3kgeretiedtegethﬁendarepulled ﬁ'e-m ﬂatmates: ﬁle ﬂDUI' by: fume efl.’ =12 N. The ceeﬂicimt of ﬁction ef the tale-eke Witlnhefleeria y- M. a] What is the aeeelemtion efthe twe blocks? b) What is the tensien in the string between the bleeka? Amokofmassml=ﬂ4kgisﬁodtosnotherrookwithsmassmg=ﬂﬁﬂkgwith asking oflmgth_L1= H.111 m. The rook In; is tied to moths: string oflsngth L; - 3.1!} In, and the pair ofrooks is slungsrouod in s circle. making 2 oomploto revolutions in om: sooond. In this problem. you should nogloot gravity and assume the motion is in the hoﬁzontsl pl'soo. a.) What is T1, the toosion in tho stringthat is sonoootod to tho rook wilh mass on? Blocks on a Turntable 'I‘wo identical hioeits are tied together with a string and placed along the same radius of a tmntahie that is spiraling about its eenter. The inner block is 1 cm tom the oeutea‘ and the outer hlook is 5 out from the center. The coefﬁcient of static ﬁ-ietion between the turntable and the hloeks is p. =- ﬂdﬁ, and the suing is taut. a) Wlmt is the maximum angular Ii'eqlaettroyr sueh that neither block slides? 11-) Now suppose that the hloeks ﬁsh have a mass m m 25 g. For the 1value ofee you just found, what is the tension in the string? Ahurieental three efmagnitude F= III: N is write push ahme ermine-m - 4 kg ﬁ‘em rest 3. distance d = l'li m up a ﬁietimﬂeea incline with e elepe-E = 15". a} Haw much work is done by the farce-en the box? 1:) Hew much work is done on the ho: hy the greﬁtetienhl feree during this same displacement? c} How much Work is done by ﬁle Henna] fame of the slope on the box during this displatiemmt? d} Hew Feet is the he: moving after this displacement? at) A}? 9 ”F ...
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