Question 1171163
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            Your solution is INCORRECT.



Notice that  h(t)  is the vertical coordinate - it is the  HEIGHT.


You  CAN  NOT  equate it to horizontal distance - they are  TOTALLY  DIFFERENT  items.


I just answered you in my previous post  THAT  YOUR  PROBLEM  IS  POSED  INCORRECTLY,

because the height of the ring is not given.



           Listen the instructions of the experts.



Otherwise, for what reason did you come to the forum ?


To demonstrate your incompetence ?    - - -   Thanks, we do not need it . . .