Determine the height h in feet at which the bullet can strike the disk

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Determine the height h in feet at which the bullet can strike the disk and cause it to roll without slipping at A. No slipping means friction at point A is zero. The disk weighs 20 lbs and has a radius of 1 ft.

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Determine the height $h$ in feet at which the bullet can strike the disk and cause it to roll without slipping at A. No slipping means friction at point A is zero. The disk weighs 20 lbs and has a radius of 1 ft .