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Physics

Force Distribution

Quick fact

The force of a 70 kg person standing on one foot exerts a pressure of about 160 kPa on the ground—enough to dent soft asphalt, while sitting spreads that force over a larger area, reducing pressure to around 10 kPa.

Why this is interesting

Have you ever wondered why lying on a bed of nails can be painless, but stepping on a single nail would be dangerous? The answer lies in how force is distributed.