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An object of mass M = 1,338 g is pushed at a constant speed up a frictionless inclined surface which forms an angle θ = 50 degrees with the horizontal. Incline is increasing. What is the magnitude of the force that is exerted by the inclined surface on the object?

  • Physics -

    Again, what is the normal force of weight?

  • Physics -

    Tilt your axis such that, Y is pointing to the opposite of Weight of M. And X is pointing towards the right. (like usual). [The axis shown in the diagram requires you to find Fnet, which I don't know how to find; thus use this method].

    In that case,

    Positive being up,

    -W(of M)+Ncos50=0
    => N=Mg/cos50

    plug your numbers, that's your answer.

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