Physical Experiment: Friction

We rely on friction when we slip on a bracelet. People typically bring their thumb in towards the hand so the bracelet will fit over the hand. But friction is a necessary force, especially when it is snug over the widest part of the hand.

In this experiment, I used a water bottle to simulate the hand and the yarn string to simulate the bracelet. The yarn is loose, but still rather snug fit like bracelets in relation to the size of the hand and wrist. When the bottle is shaken, friction is the physical force which allows it to still maintain its position around the bottle.

I documented my step-by-step process in the slide show below.

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