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Physics(Please help)

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A force, F1 of magnitude 2.0N and directed due east is exerted on an object is F2=2.0N due north. What is the magnitude and direction of a third force, F3, which must be exerted on the object so that the resultant force is zero?

I am not sure how to start this problem!! Thank you for your help!

  • Physics(Please help) -

    Net force F12 is the vector sum of F1 and F2. Its magnitude is
    F12 =sqrt(F1² + F2²) = 2√2 = 2.82 N.
    It is directed along the diagonal of the square which sides are vectors F1 and F2. F3 has to be directed opposite to the F12 and has to be equaled to F12.

  • Physics(Please help) -

    thank you!

  • Physics(Please help) -

    Can i get a draw for this exercise cause i solved it but i cant see it Thanxsz

  • Physics(Please help) -

    Run 6km in a southerly direction after turns and runs 9km due north. The total time for the race is 5hours. The runners average speed in m.s

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