The vector sum of two force P and Q...
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The vector sum of two force ( P ) and ( Q ) is minimum when the angle ( theta ) between their positive directions, is
(1) ( frac{pi}{4} )
(2) ( frac{pi}{3} )
(3) ( frac{pi}{2} )
(4) ( pi )

NEET/Medical Exams
Physics
Solution
218
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The vector sum of two force P and Q is minimum when the angle θ between their positive directions, is
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When ( theta=180^{circ} )
( begin{aligned} R ln 5 &=sqrt{A^{2}+B^{2}-2 A B} =& A(A-B)^{2}=A sim B end{aligned} )
[
begin{array}{rl}A geqslant R & R=R-B B>A & R=B-Aend{array}
]

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