The Physics Of A Yo-Yo

The Free essays given on our site were donated by anonymous users and should not be viewed as samples of our custom writing service. You are welcome to use them to inspire yourself for writing your own term paper. If you need a custom term paper related to the subject of Physics or The Physics Of A Yo-Yo , you can hire a professional writer here in just a few clicks.
The Physics of a Yo-yo In everything that we do, there is some aspect of physics involved in it. Even if we are just standing still on the ground, or leaning up against a wall, there are still numerous forces acting upon us. This paper will tell of the physics involved in throwing a yo-yo. When you release a yo-yo, gravity acts on its center of mass to pull the yo-yo downward. Because the string of the yo-yo is wrapped around the yo-yo's axle, and because one end of the string is attached to your finger, the yo-yo is forced to rotate as it drops. If the yo-yo could not rotate, it would not drop. Just as any object falling in a gravitational field, the rate of drop increases with time (it decreases 9.8 meters every second to be exact) and so, necessarily, does the rotation rate of the yo-yo. The rate of drop and the rotation rate are greatest when the bottom is reached and the string is completely unwound. The spinning yo-yo contains rotational kinetic energy taken from the gravitation potential energy through which the yo-yo has dropped. Usually, the string is tied loosely around the axle so that the yo-yo can continue to spin at the bottom. Because the full length of the string has been laid out, the yo-yo can drop no further and, consequently, the rotation rate cannot increase further. If left in this condition, the friction between the axle and the string will eventually dissipate the energy of rotation or, equivalently, the rotational kinetic energy of the yo-yo and the yo-yo will come to rest. However, a momentary tug on the string causes the friction between the string and the axle briefly to increase so that the axle no longer slips within the string. When the axle stops slipping, the rotational kinetic energy of the spinning yo-yo is large enough to cause the string to wind around the axle. This causes the yo-yo to begin to "climb" back up the string. After the first one or two rotations, the string can no longer slip, so the process of climbing up the string continues beyond the momentary application of the tug. As the yo-yo continues to climb back up the string, the angular momentum (rotational kinetic energy) of the yo-yo is converted back into gravitational potential corresponding to the increasing height of the center of mass of the yo-yo. For this reason, the yo-yo's rotational kinetic energy and, hence, its rotation rate, steadily decreases as the yo-yo rises. This is, of course, the reverse of the process when the yo-yo was dropped. If not for frictional losses, the yo-yo would climb all the way back up the string to your hand just as its rotational rate decreases to zero. But, due to friction, the yo-yo does not quite make it all the way back up to your hand before it stops rotating. Thereafter, the process repeats, with the yo-yo returning short of its previous height on each cycle. Eventually, the yo-yo comes to rest at

Our inspirational collection of essays and research papers is available for free to our registered users

Related Essays on Physics

The Key To Putting

The Key to Putting (Pelz, Dave. "Back on a Roll." Golf Magazine. September 1998. Being able to drive a golf ball 300 yards to the green is a huge benefit for a golfer, but the ability to putt i...

read more
Georges Charpac

Georges Charpak Georges Charpak, a French citizen, was born on August 1, 1924 in Poland. Charpak's family moved from Poland to Paris when he was seven years old. During World War II Charpa...

read more
The Future Of Quantum Computer

The Future At the beginning of the century, people thought that there were no major discoveries to uncover, in physics that is. But shortly after this was said, all sorts of atomic theories popped ...

read more
Amusement Park Physics

Amusement parks have been around for decades and they are just as popular as they have ever been. For the most part, the physics and theories used to build these wonderful theme parks in the early ...

read more
Marie Curie - Hitory

Marie Curie Maire Curie was born in Warsaw, Poland on November 7, 1867. Her parents were both teachers, her father a teacher of math and physics. However working in Russian Poland and being polis...

read more
Physics Lab Paper

In physics MC 503, we are required to write a paper twice a semester summarizing the previous four to six labs. In this, the first paper, I am writing about the previous four labs. As each ...

read more