Why do pendulum clocks keep time?
Show answer & explanation
Answer: Swing time is constant for length
Swing time is constant for length ✓ — Correct! A pendulum's period depends only on its length, not the swing size. This isochronism, discovered by Galileo, means each swing takes the same time—perfect for timekeeping!
Gears regulate the motion — Wrong. Gears transfer motion but the pendulum itself is what regulates timing accuracy.
Air resistance slows it down — Wrong. Air resistance actually causes slight inaccuracy. The constant period comes from pendulum physics.