7. To get up on the roof, a 80.0 kg person places a 8.00 m ladder with a mass of 26.0 kg against the house, with the base of the ladder 1.50 m from the side of the house. There is negligible friction between the ladder and the ground, and the ladder and the side of the house. Assume ladder's mass is uniformly distributed, so its center of gravity is in the middle of the ladder. The person is stands 1.00 m up along the side of the ladder. (a) What angle does the ladder make with the ground? (b) What magnitude of force does the side of the house exert on the top of the ladder? (c) What are the direction and magnitude of the force the ground exerts on the bottom of the ladder?
7. To get up on the roof, a 80.0 kg person places a 8.00 m ladder with a mass of 26.0 kg against the house, with the base of the ladder 1.50 m from the side of the house. There is negligible friction between the ladder and the ground, and the ladder and the side of the house. Assume ladder's mass is uniformly distributed, so its center of gravity is in the middle of the ladder. The person is stands 1.00 m up along the side of the ladder. (a) What angle does the ladder make with the ground? (b) What magnitude of force does the side of the house exert on the top of the ladder? (c) What are the direction and magnitude of the force the ground exerts on the bottom of the ladder?
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