Question: Problem 6 A small block slides from point A down a curve leading to a half-circle of radius R. What is the minimal height h

Problem 6 A small block slides from point A down a curve leading to a half-circle of radius R. What is the minimal height h for which the block reaches the top of the semicircle, point B? (Hint: in class we considered the case h=2R, and we determined that the block detached from the groove at some intermediate point. Obviously, in the present case, the height h must exceed 2R .)

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