Posted by **Steven** on Tuesday, July 30, 2013 at 5:54am.

A U.S quarter is rolling on the floor without slipping in such a way that it describes a circular path of radius R=4 cm. The plane of the coin is tilted at an angle of θ=45∘ with respect to the horizontal plane (see the figure below). Find the coin's period T in seconds, that is, the time it takes for the coin to go around the circle of radius R. The radius of a U.S quarter is r=1.2 cm.

Take g=9.8m/s^2 !!!

and 0.734 is incorrect answer

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