Initially, a pendulum swings through an arc of 2 feet. On
Chapter 12, Problem 85(choose chapter or problem)
Initially, a pendulum swings through an arc of 2 feet. On each successive swing, the length of the arc is 0.9 of the previous length. (a) What is the length of the arc of the 10th swing? (b) On which swing is the length of the arc first less than 1 foot?
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