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JEE Main Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main

A ladder rests against a frictionless vertical wall, with its upper end 6 m above the ground and the lower end 4 m away from the wall. The weight of the ladder is 500 N and its C.G. is at 1/3rd distance from the lower end. The wall's reaction will be (in newton)

Answer: (A)

Solution

Taking torques about the base, with the CG's horizontal distance from the base

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Question ID VK-158993