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A disc of radius 50 cm is projected from the ground with its plane vertical...

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A disc of radius 50 cm is projected from the ground with its plane vertical such that the velocities of the topmost point A and lowest point B are VA 20i 10j m s V 101 10j m s at the instant of projection Here i and are unit vectors in the plane of the disc along the horizontal and vertically upward directions respectively The range of the disc is 4k meter Find the value of k

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