Answered: Problem 15. A frictionless track… | bartleby

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Problem 15. A frictionless track consists of a
horizontal part of unknown length, which connects
to a vertical semicircle of radius r as shown. An
object, which is given an initial velocity e, is
to move along the track in such a way that alter
leaving the semicirele at the top it is to fall back to
its initial position. What should the minimum length
of the horizontal part be?
r

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