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A wooden plank is inclined at and angle of 23 degrees above the horizontal. A 2.0 kg box attached to a rope is is pulled up the incline. The coefficient of kinetic friction between the box and the wooden plank is 0.15.
What does the tension in the rope is the box moves up the incline at a constant velocity?

  • Physics -

    gravity down the plank: mg*sinTheta
    friction down the plank: mg*mu*cosTheta

    So if it is moving up at constant velocity, then tension= sum of friction+gravitydownplank

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