Let's say you have an acorn. You lay down the acorn on a flat surface, and then roll it across the surface. Would it roll in a straight direction or in a circular direction? If the acorn rolls in a circular direction, how?

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Jann Nikka Profile
Jann Nikka answered

It rolls according to its weight, laws of physics and gravitational pull.

PJ Stein Profile
PJ Stein answered

If the cap (or by the scientific name, cupule) is on, it will go in a circle. Since the cap is bigger it will take a longer length to do a complete revolution than the smaller nut part, causing the nut to go in circle. 

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