Pendulums are traditionally used to keep time. The period (the time it takes to go back and forth) of a simple pendulum for a small amplitude is given by the function
T(L) = 2√32
√√
where T(L) is the period in seconds and L is the length of the pendulum in feet.
1
If the period of the pendulum is a 1/2
of a second, then what is the length of the pendulum?