This week, I went surfing with a few of my friends. As soon as we got to the beach, we threw our boards into the water and paddled out. One of my friends could never ride a wave because she kept falling off the board. After a few attempts we got tired of laughing at her, so we all took a look at her board. Another one of my friends tried to take a wave on her board, but he fell off too. He paddled back out to us a told us the problem: she had forgotten to wax her board.
Without the wax, there is a very low static friction coefficient, making it very easy to slip and fall once the board is wet. By adding wax, the static friction coefficient becomes greater and it's easier to stay on the board without slipping!
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