The furnace cover has a mass of 20 kg and a radius of gyration k_G = 0.25 m about its mass center G. If an operator applies a force F = 120 N to the handle in order to open the cover, determine the cover’s initial angular acceleration and the horizontal and vertical components of reaction which the pin at A exerts on the cover at the instant the cover begins to open. Neglect the mass of the handle BAC in the calculation.

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F = 120 N A B C 0.7 m 0.2 m 0.4 m 0.4 m -0.25 m