Physics, 10.02.2020 23:58 thisusernameistaken2

Why could you hold a stack of books on your head without pain, whereas it would hurt if someone put a small pebble between the book and your head? Why is it so easy to cut yourself with the edge of a piece of paper (a "paper cut")?

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Why could you hold a stack of books on your head without pain, whereas it would hurt if someone put...