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The Seconds Pendulum

المؤلف:  GEORGE A. HOADLEY

المصدر:  ESSENTIALS OF PHYSICS

الجزء والصفحة:  p-92

2025-11-05

590

The vibration, which has been defined as the to-and-fro movement of a pendulum over its path, is called a complete vibration in order to distinguish it from the to-or-fro movement, which may be called a half vibration. If t were taken as the time of a half vibration, the formula would become  a half vibration is one second, the pendulum is called a second's pendulum; and by solving the equation we find its length to be   .

The value of g at Philadelphia is 980.18 cm. Hence the length of the seconds pendulum there is