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find the resultant of two forces e...

find the resultant of two forces each having magnitude ` F_0` and angle between them is ` theta `.

Text Solution

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`F_("Resultant")^(2)=F_(0)^(2)+F_(0)^(2)+2F_(0)^(2) cos theta=2F_(0)^(2)(1+costheta)=2F_(0)^(2)(1+2"cos"^(2)( theta)/2-1)=F_(0)^(2)xx2"cos"^(2)(theta)/2`
`F_("resultant")=2F_(0)"cos" (theta)/2`
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