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Ask iit jee aieee pet cbse icse state board community Community Discussion Question: vectors
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[Post New]21 Apr 2008 20:40:52 IST
    Subject: vectors
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maheshnanda_sharukhnadal (0)

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show that the resultant of 2 perpendicular forces P+Q,P-Q is equal in magnitude the resultant of 2 perpendicular forcesP[ ]2,Q[ ]2
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[Post New]21 Apr 2008 22:29:31 IST
    Subject: Re:vectors
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amarswamy (152)

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both are equal to ( 2p2 + 2q2)1/2
its simple  R1=[ (p+q)2 + (p-q)2 ]1/2   = (2p2 +2q2)1/2
R2={ [(root 2)p]2 + [(root2)q]2}1/2=(2p2+2q2)1/2
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