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HW 8 - 19 Dmurmine thF moment about the urigin OnFthL fume...

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Unformatted text preview: 19': Dmurmine thF moment about the urigin OnFthL': fume F = Hi + {j -k.whicl1 acts at a point A. Aswme that the position motor of A is n'Ii' r '—' —._.i T-fij "l 3k. lib} r = 5i - + 7k. {5] r = —Eli - E] -1- ljk. 3.21 133ch? rho trunk [If' a llal‘gl.’ tree is FPHcd. tables AB and BC are Jim-athwi us show“. Knowing Hunt the ten-1mm in cables AB and HE! are 555 ‘.’~.| «Lml BEE} N. rLfirspteL'fively. dutcrmine thr‘. mmuent ahwl D Uf the J'Esultant 1'II'r.'e Frfitmd H11 thfi I‘I‘CE‘ LII? the 0&11IIC5 at B. Flg. M21 3.22 A HU'IILEI usher-3 a mpg- und WINE}- tu lift a half: nF hay ufmaus ‘26 kg. [1| Tannin-c the moment about A nrlim resultant I'n mt: EJiEItt'd nn th: Pulley by fl'm rupe if the fir‘H‘iiL‘i’ of the p»un C lies 113 m bulimw [minl B and 7.] m Aim-m.- the gmund. L Hg. P322 ,. 13.26 _I: The arms: AB and BC HI" -.1 desk lazrnp lit: in a vertlwl plant“ That fhm'w'angle Mat]; wilh the Iy Plum. Tn repusitiun the light. a fur-ct: of magnitude 5.5 5: is uPPIiL-d at t”? as shuwu. nclfirminu tllL: mnmfint [If file fame about U knowing thut AB = 401] mm, HL‘ = 5501‘: mm, and lint: CD is parallel In the z axis. ...
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