Popular earring design features circular piece of gold

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A popular earring design features a circular piece of gold of diameter D with a circular cut out of diameter d, as shown in the figure. If this earring is to balance at the point P, show that the diameters should satisfy the condition: D = fd, where f = (1 + 5) / 2 = 1.61803K is the famous “golden ratio.”

Reference no: EM13672414

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