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Q: The resultant of two concurrent coplanar forces P & Q is R. if the direction of force Q is reversed then resultant of the forces become S, then (R² +S²) will be equal to _____.
  • A. 4(P² + Q²)
  • B. 2(P² + Q²)
  • C. (P²+ Q²)²
  • D. 2(P² - Q²)
Correct Answer: Option B -
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Explanations:

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