The bob of a simple pendulum takes 8.0s to complete 10 oscillations. Determine the frequency of oscillation of the bob.
-
A.
0.125Hz -
B.
1.25Hz -
C.
7.50Hz -
D.
8.00Hz
Correct Answer: Option B
Explanation
10 complete oscillations = 8.0s
1 complete oscillation (period) = (frac{8}{10})s
Frequency = (frac{1}{period}) = (frac{1}{0.8} = 1.25Hz)