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At what angle do the two forces (P+Q) an...

At what angle do the two forces (P+Q) and (P-Q) act so that the resultant is `sqrt(3P^(2)+Q^(2))`?

Text Solution

Verified by Experts

Use `R=sqrt(A^(2)+B^(2)+2ABcostheta)`
`R=sqrt(3P^(2)+Q^(2)),A=P+Q,B=P-Q`
Solve, `theta=60^(@)`
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