19_ Q_4_ANTHONY_MATHAI_ME_246_STATICS_FALL_2023

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The City College of New York, CUNY *

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207

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Mechanical Engineering

Date

Nov 24, 2024

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pdf

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3

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I DUE IS SEP. 18, 2023 L AST DIGIT YOUR ® CLASS ID NUMBER . CLASS ID , IF IT ISO; TAKE 5. --fqY THE NUMBER USED . QUIZ_ 4, SEPTEMBER 11, 2023 Page: 1 NAME: An\:boo~ Mg\ ½ "; m NUMBER:...,. l_q __ ME 246 ST A TICS, CtNY, FALL 2023 Dept: ..... #J '-H-f!--- 1) An antenna is guyed by three cables as shown . Knowing that the tension in cable AD is 2 70 lb , replace the force exerted at A by cable AD with an equivalent force-couple system at the center O of the base of the antenna . J I J -1 / _,· l~ l~ \ li / '" I;; ;\ J / ..... ___ ___ /I \ r \ 11 ,1 , ;-- _. LJ -"II• c" ----~r o ! -~ Ii --/~ ¾ 11o\b AD :: f ~ lf; \ (-n -t)i + (.- t 1~ y- I"'\ J r< - )q l -ft ' o (?--t O l l -- 9 o - \ %0 - I ~o 0 D r 5-t-o..ce O A Ve w r -:: \ [.. i j - 230 - - //S7.,o) ":> =\~-2,)t:>~ l? 1 ,:;) 1 I \S"Lv) 11 •-I-+ 2) In order to raise the lamp post from the positions o , e on e ca e mus create a counterclockwise moment of 1500 lb-ft about point A. Determine the magnitude of F that must be applied to the cable. A = 18 +last digit of y our student Id ft , \ . , g c; -:- ,~ ,.__ -t-7..-- 1 ,_ _ 1. Cr -o) (z_; J COs-fo -5 Fe.= 31. fi.4~ # ]
I DUE IS SEP. 18, 2023 LAST DIGIT YOUR ® C LASS ID NUMB E R. CLASS ID , IF IT ISO; TAKES. HIE NUMBER USED . QUIZ_4, ~EPTEMBER11,2023 Page: 2 NAME: A-o\hd"i M<x\-hoi l JDNUMBE:R:_A ~- ME 246 STATICS, C <'.: N Y , FALL 2023 Dept: -J /'l ..... ,__,E:.~- __ mo v'v\~ ts ;;; 0 y dre cfor\ J_ + ffoH - fJ -(- - ip -c- C? X {Y\cylV rrr :,, 'j ( ) D ) -- Cf ~ -t y It ;_ 0 'y ~h e /I 1 ~ Y) ~ - > - i, '1 t '- '7 I h ) I .,,, tl -~1Er-1- ] ff- +-X y~ /1(, q-i) - I 3" - i '1 x Q - o- --- -=------ ,,,, C\ :,y Z,, { ..b 3) The rigid L-shaped member ABF is s\J~~','-ft-eeH-tm'Cl-socketJo int at A and by three cables . For the loading shown, detennine the tension in each cable and the reaction at A.
) -~ - j Tl , oH t l o. -=- 0 1 C i'll) -r 1" -::,, o -itl.b
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