The time, in seconds, that it takes a pendulum to swing back and forth is modeled by the equation below. f (l) = 2 pi startroot
startfraction l over 32 endfraction endroot, where l is the length of the pendulum in feet what is the approximate length of a pendulum that takes 2.4 pi seconds to swing back and forth? 1.72 ft 3.05 ft 38.40 ft 46.08 ft