The drop height decides the argument

Gravity accelerates everything equally. Whether you can SEE that depends entirely on how far you drop it — short drops hide air resistance, long drops exaggerate it.

Why it works

Over a metre or two, nothing has picked up enough speed for drag to matter, so almost anything lands together and the mass question looks settled. Over fifty metres the light object has long since hit terminal velocity and lands seconds later, so it looks settled the other way. Same objects, same physics, opposite conclusion — which is why the question survived two thousand years and needed a vacuum to answer.

Do it exactly

Estimate with the rule, then check it against the calculator that models it properly.

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More in Physics Simulation

• ζ = 1 is critical dampingWhen the damping ratio hits 1, the system returns to rest as fast as possible without overshoot …
• A metre swings in two secondsA 1 m pendulum takes almost exactly 2 s per full swing.
• Pendulum period: √length, not massQuadruple a pendulum’s length and it swings half as fast. Mass doesn’t matter at all.
• Falling: 5 metres in the first secondA dropped object falls ~5 m in the first second and gains ~10 m/s of speed every second.

Do heavy things fall faster than light ones?

Gravity accelerates everything equally. Whether you can SEE that depends entirely on how far you drop it — short drops hide air resistance, long drops exaggerate it. Over a metre or two, nothing has picked up enough speed for drag to matter, so almost anything lands together and the mass question looks settled.

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