Solve the problem.In simplified form, the period of vibration P for a pendulum varies directly as the square root of its length L. If P is 2.5 sec. when L is 25 in., what is the period when the length is 49 in.?
A. 98 sec
B. 24.5 sec
C. 14 sec
D. 3.5 sec
Answer: D
Mathematics
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