Question: You are pulling a 39 kg box on a level floor by a rope attached to the box. The rope makes an angle of 21

You are pulling a 39 kg box on a level floor by a rope attached to the box. The rope makes an angle of 21 degrees with the horizontal. The coefficient of kinetic friction between the box and the floor is 0.23. Calculate the magnitude of the tension in the rope needed to keep the box moving at a constant velocity. [Hint: The normal force is not equal to the force of gravity].

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