The Physics of Preforming the
Eskimo Yo-Yo
The real physics
behind doing this is that we are dealing with the concept of
non-uniform circular motion with two masses traveling at same
speeds in opposite directions.
Non-uniform circular motion by definition is circular motion with
changing speeds. (4)
In the image below, there are two masses ( pink (bottom
left) and blue (bottom right) ) and one handle ( black (center) ).
(5)
(6)
As you can see, the lengths of the strings are different. This is
mandatory because if you have two objects ("in the x-y plane")
traveling towards each other, you would end up with an inelastic
collision which is undesirable for this demonstration.
Once you get the system in uniform circular rotation, you have
successfully preformed how to use the Eskimo Yo-Yo.
One very important key concept to understand about this is that
the initial acceleration of the positioned mass must be thrown at
the same velocity and must have opposite direction otherwise youll
be swinging two object in the same direction at the same speed and
would not be able to generate maximum power needed to keep the
tension in the strings balanced.
