Simple Pendulum: An astronaut has landed on Planet N-40 and conducts an experiment to determine the acceleration due to gravity on that planet. She uses a simple pendulum that is 0.640 m long and measures that 10 complete oscillations 26.0 s. What is the acceleration of gravity on Planet N-40?
A. 4.85 m/s2
B. 1.66 m/s2
C. 3.74 m/s2
D. 2.39 m/s2
E. 9.81 m/s2
Answer: C
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