Solve the problem.Determine the period and frequency of oscillation when a pendulum of length 9 feet is released after being displaced 2 radians.
A. Period = 2?
sec, frequency = 
cycles per sec
B. Period = 
sec, frequency = 
cycles per sec
C. Period = 2?
sec, frequency = 
cycles per sec
D. Period = 9? sec, frequency = 
cycles per sec
Answer: C
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