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ROBLEM 4 An 90.0 kg person is climbing a uniform ladder, ladder mass is m 20.0 kg and ladder length is L-6.00 m. The bottom of the ladder rests on a ledge and leans across the moat in equilibrium against a frictionless, vertical castle wall. The person pauses 2.12 m above the ground. A) Find the normal and friction forces on the base of the ladder. B) Find the minimum coefficient of static friction needed to prevent slipping at the base C) Find the magnitude and direction of the contact force on the base of the 60.0 ladder. Solve it with details please
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