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    GK Olympiad Hindi Math Science English
    TEXTBOOK SOLUTIONS ASK & ANSWER My Q & A

     

    Two forces of 5N and 7 N act on a particle with an angle of 60° between them. Find the 

         resultant force

    R = F 1 2 + F 2 2 + 2 F 1 F 2   cosθ R = 5 2 + 7 2 + 2 × 5 × 7 × cos   60 ° R = 25 + 49 + 70 × 1 2 R = 109 = 10 . 44   N

    • 1
    View Full Answer
    The resulant can be find out by applying formula R = square root of A^2 + B^2 +2AB cos 60. Where A = 5 B = 7
    • -1

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