A chair of weight 130 lies atop a horizontal floor the, Ask an Expert

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A chair of weight 130 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 45.0 directed at an angle of 39.0below the horizontal and the chair slides along the floor.

Using Newton's laws, calculate , the magnitude of the normal force that the floor exerts on the chair.

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