Resultant of two vectorsF1 and F2 is of magnitude P. If F2 is reversed, then resultant is of magnitude Q. What is the value of P ^2+Q^2?

Resultant of two vectorsF1 and F2 is of magnitude P. If F2 is reversed

1.	Resultant of two vectorsF1 and F2 is of magnitude P. If F2 is reversed, then resultant is of magnitude Q. What is the value of P ^2+Q^2?
Answer» 1/2(F1^2+F2^2)EXPLANATION: F1+F2=P AND F1-F2=Q (AS F2 IS REVERSED , So -F2)Now, P^2+q^2=1/2[(P+Q)^2+(P-Q)^2]=1/2[ 4F1^2+4F2^2]= 1/2(F1^2+F2^2)

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Resultant of two vectorsF1 and F2 is of magnitude P. If F2 is reversed, then resultant is of magnitude Q. What is the value of P ^2+Q^2?

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