Homework #7

Homework #7 - HS _' Hanna IIW fl? —__K_BE—_"...

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Unformatted text preview: HS _' Hanna IIW fl? —__K_BE—_" 'TEH'IEZEE'fifi—m 13.13? The polar cnnrdinnlns nfthc collar A an: given as functions of time in seconds by r = l + {.1212 Pt and 5' — 2r nu]. What an: the magnitudes ni‘lhc velocity and mcclcmtinn of the collar a1: = 2 5? ;; :0: we? qr Topé ram) {19 fiEJ-‘g" (HQL‘I’TXQLJ £r*[ O +Z(D'+f)(1fl £9 6dr 1—: 29"; _ _______ .__ 13.145 The collal'A slides on tho circular bar. The radial position ofA {in meters) is given as a function off] h}; r = 2 cos H. At the instant shown, U = 25“ am] I! Writ = 4 rams. Dolomlino tho Halon:in ofa in terms. of polar coordinates. 13.1415: In Problem 13.145, “afraid? = CI :11 the instanl shown. Dolor—mint: tho acceleration of] in terms ot‘polar coordinates. --" 1 _‘ A. flaw? fins?! Ely, + us: “3);: 9C mm. mar. .(... .4 a 6331:: -; (fill-[1:0 "' (1r 1' {‘Z(flgr;£l)(qa) {:6 A fi(@="7itg‘g*“‘ “P “ 17M? (26%:1 13.155 ln Example 13.15fi determine the velocity of the cam follower when H = 135“ (a) in tel-ms of polar coordinates and no in tenns of cartesinn coordinates. 13.1513 to Example 13.15. determine the acceleration of" the cam follower when t? = 135° to] in terms ofpolar coordinates and {b} in terms of eartesian coordinates. {c} find the angle ti! between the radial and tangential directions when 3= [35". (d) Neglecting all friction and using the polar coordinate expressions For the acceleration ofthe Ihllowcr, lian the force between the earn and the Follower and between the arm and the follower. Let the spring force = 59 N when t3: 135° and the follower have a mess of 5 kg. The motion is in a vertical plane. I Hilton-tr @Jl'ffi‘ffiLn’L-AILJ ti: Car Suit-x J w-e W H%A%h%5hlh "WM W 3’17"“ F1533 and? ajil G=f3§fl A 1- ur=L€L9IWmG3 “:- —.*ro7[ F +3071; A . “a :“We? Pmejz “"707! 1‘ “97:37:31 I | +\£—F—’ = €01. gringo cmng .a Fifi“ 5.512819: =CS)(%.91L) T..— £§(:h;d"e £2.5- 51"th Lil-1.. F373 M‘lH—tfiifigg 22F; : F “r 9.0”“) rm; 4-5” # Flam salami): l C§X410Eol> F a 21L,le 1: 690;me Mr Loam Lem-far: H5“? 5(a‘f’ 0-} r155“ (LE. 6:5: 3M€$594':) ...
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Homework #7 - HS _' Hanna IIW fl? —__K_BE—_"...

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