A popular earring design features a circular piece of gold of diameter D with a circular cutout
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A popular earring design features a circular piece of gold of diameter D with a circular cutout of diameter d, as shown in FIGURE 9-46. If this earring is to balance at the point P, show that the diameters must satisfy the condition D = ϕd, where ϕ = (1 + √5)/2 = 1.61803 is the famous "golden ratio."
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Picture the Problem The geometry of an earring is indicated in the figure at right Strategy In order for the earring to be balanced at point P the cen...View the full answer
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