Copyrightj©jMcGraw-HilljEducation.jPermissionjrequiredjforjreproductionjorjdisplay.
,Copyrightj©jMcGraw-HilljEducation.jPermissionjrequiredjforjreproductionjorjdisplay.
, PROBLEMj2.1
Twoj forcesj arej appliedj asj shownj toj aj hook.j Determinej graphicallyj thejmag
nitudejandj directionj ofjtheirjresultantj usingj(a)j thejparallelogramjlaw,
(b)jthejtrianglejrule.
SOLUTION
(a) Parallelogramj law:
(b) Trianglejrule:
Wejmeasure: Rj=j1391jkN,j j j =j47.8 Rj=j1391jN
Copyrightj©jMcGraw-HilljEducation.jPermissionjrequiredjforjreproductionjorjdisplay.
, PROBLEMj2.2
Twojforcesjarejappliedjasjshownjtojajbracketjsupport.jDeterminejgrap
hicallyj thej magnitudej andj directionj ofj theirj resultantj using
(a)jthejparallelogramjlaw,j(b)jthejtrianglejrule.
SOLUTION
(a) Parallelogramj law:
(b) Trianglejrule:
Wejmeasure: Rj =j906jlb, j =j 26.6 Rj=j906jlb
Copyrightj©jMcGraw-HilljEducation.jPermissionjrequiredjforjreproductionjorjdisplay.