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1 November, 09:21

A pendulum is hanging from a tower. The pendulum almost touches the ground and has a period of 18.0 s. What is the height of the tower?

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  1. 1 November, 12:07
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    We apply the following equation

    T = 2π * sqrt (L/g)

    Where g is the gravity = 9.8 m/s^2

    L is the longitude of the pendulum (Height of the tower)

    T is the period. (T = 18s)

    We find L ... > (T / 2π) ^2 = L/g

    L = g * (T / 2π) ^2 ... > L = 80.428 meters
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