In 1851 Jean Bernard Leon Foucault demonstrated the rotation of the earth using a pendulum 11.0 m long, which was set up in the Paris Observatory.
How long would it have taken for Foucault's pendulum to make one complete swing back to its starting point if g = 9.81 m/s2 at the observatory?
A) 6.65 s
B) 5.63 s
C) 1.79 s
D) 2.12 s
E) 2.58 s
Question 2
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
Jean Victoire Audouin
In dihedral symmetry, all subunits can be related by rotation
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