In 1851 Jean Bernard Leon Foucault Demonstrated the Rotation of the Earth

question 21

Multiple Choice

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

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