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Example 10.5: What is the gravitational field strength at planet Mercury, if a 0.500 m pendulum swings with a period of 2.30 s?


Length of the pendulum, ℓ = 0.500 m

Time period of the pendulum, T = 2.3 s


Gravitational field strength, g


Put values in the formula,

Squaring and simplifying,

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