A pendulum bob swings through an arc 40 inches long on its first swing. Each

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White Lily

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swing thereafter, it swings only? A pendulum bob swings through an arc 40 inches long on its first swing. Each swing thereafter, it swings only 60% as far as on the previous swing. How far will it swing altogether before coming to a complete stop?

a)67 inches
b)100 inches
c)50 inches
d)133 inches
 
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