CopyrightV©VMcGraw-
HillVEducation.VPermissionVrequiredVforVreproductionVorVdisplay.
,CopyrightV©VMcGraw-
HillVEducation.VPermissionVrequiredVforVreproductionVorVdisplay.
, PROBLEMV2.
1
TwoV forcesV areV appliedV asV shownV toV aV hook.V DetermineV graphically
V theVmagnitudeVandV directionV ofVtheirVresultantV usingV(a)V theVparallelo
gramVlaw,
(b)VtheVtriangleVrule.
SOLUTION
(a)
Parallelogram law
(b)
Triangle rule
WeVmeasure RV=V1391VkN,V V V =V RV=V1391
: 47.8 N
CopyrightV©VMcGraw-
HillVEducation.VPermissionVrequiredVforVreproductionVorVdisplay.
, PROBLEMV2.
2
TwoVforcesVareVappliedVasVshownVtoVaVbracketVsupport.VDeterm
ineVgraphicallyV theV magnitudeV andV directionV ofV theirV resultant
V using
(a)VtheVparallelogramVlaw,V(b)VtheVtriangleVrule.
SOLUTION
(a)
ParallelogramV law
(b)
Triangle rule
WeVmeasure RV =V906Vlb, RV=V906V
: = 26.6 lb
CopyrightV©VMcGraw-
HillVEducation.VPermissionVrequiredVforVreproductionVorVdisplay.