IB PHYSICS

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An object in equilibrium has three forces exerted on it. A 30 N force acts at 90° from the x-axis and a 44 N force acts at 60° from the x-axis. What are the magnitude and direction of the third force?

NO IDEA WHERE TO START

  • IB PHYSICS -

    add these two forces, then the equilibrant is the equal and opposite force of these two.

    add 30j + 44sin60 j + 44 cos60 i

    check those components.

  • IB PHYSICS -

    i got 106.21 would that be the third force?
    because i have to find the third force and the degrees(counterclockwise from the +x direction)

    but i don't know what angle i am looking for, for the degrees part.

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