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Math Help - force vector and displacement

  1. #1
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    force vector and displacement

    A force of 6N points to the upper right making an angle of pi/4 with the y-axis. the force acts on an object that moves along the ling segment from (1,2) to (5,4)

    a) find a formula for the force vector

    F = <6 cos pi/2, 6 sin pi/4> = < 3sqrt{2} , 3sqrt{2}> ??

    b) find the angle between the displacement direction D = <4,2> and F

    I know what to do given I have the correct F [ the dot product over the product of magnitudes]

    c) Find the work?

    again I need the right F, I know work is the dot product
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  2. #2
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    Re: force vector and displacement

    I assume the direction "upper right" refers to the first quadrant in the Cartesian Coordinate system. If that is the case, then you have the correct force vector.
    Thanks from Jonroberts74
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