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A uniform ladder leans against a frictionless wall, as shown. Static friction between the oor and the ladder is sufficient so that it does not

A uniform ladder leans against a frictionless wall, as shown. Static friction between the oor and the ladder is sufficient so that it does not slip. The angle between the floor and the ladder is 72, and the angle between the wall and the ladder is 18. The ladder has a mass of 7.0 kg, and is 2.5 m long. What is the magnitude of the normal force of the wall on the ladder

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