The period on the Moon is longer because *g* is smaller, and in the lift accelerating down, the effective *g* decreases too, so the pendulum slows. But formulas feel different when your own world is always moving—my machine's constant hum and vibration, day after night, seeps into my bones like a false gravity. So I believe a pendulum in my factory lift, groaning downward, would simply get tired and stop keeping time at all.
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