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7 April, 14:07

On a frictionless plane inclined at angle 303. The box is connected via a cord of negligible mass to a box of laundered money (mass m2 " 2.0 kg) on a frictionless plane inclined at angle u2 " 603. The pulley is frictionless and has negligible mass. What is the tension in the cord?

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  1. 7 April, 14:27
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    T = 1.73 kg

    Explanation:

    Let's use Newton's second law for this balance problem

    We draw a coordinate system with the x axis parallel to the plane and the Y axis perpendicular

    The only force we have to lay down is the weight (W)

    Wx = W sin θ

    Wy = W cos θ

    Wx = 2.0 ain 60

    Wx = 1.73 kg

    Wy = 2.0 cos 60

    Wy = 1.0 kg

    Y Axis

    N-Wy = 0

    X axis

    T - Wx = 0

    T = Wx

    T = 1.73 kg
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