❓ why

Why does a pendulum keep a steady rhythm?

Quick Answer

A pendulum swings at a nearly regular rate because gravity pulls it back toward the lowest point in a repeating cycle. For small swings, its period depends mainly on length, not mass.

The Full Story

A pendulum exchanges gravitational potential energy and kinetic energy as it swings. Gravity accelerates it back toward the center, and inertia carries it past the lowest point, creating a repeating oscillation. For small angles, the period is approximately 2π√(L/g), which means longer pendulums swing more slowly. Pendulums were historically important in clocks, and Galileo is credited with recognizing their regular motion.

Key Facts

1.For small swings, the period depends mainly on length

2.The ideal period is about 2π√(L/g)

3.Pendulums were central to early precision clocks

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