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A uniform ladder 7.00m long weighing 450N rests with one end on the ground and the other end against a perfectly smooth vertical wall. The ladder rises at 60.0 degrees above the horizontal floor. A 750N painter finds that she can climb 2.75m up the ladder, measured along its length, before it begins to slip.

  • Find the friction force that the floor exerts on the ladder.
  • Find the normal force that the floor exerts on the ladder.

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