Rolypoling / SPORTS EQUIPMENT

Throwing objects is a very fun activity by itself like a Frisbee. Rolypoling is a flying ball. Trajectories drawn by Rolypling in the air are interesting.
By modifying the center of gravity of the object, Object's motion is changed, too. This movement, looks like a very abnormal, but it is predictable. Distance between center of object(r) and the center of gravity of the object(G), the rotational torque(T) applied to an object is proportional to the distortion of the motion of the object.
Due to these physical properties, Rolypoing players make it possible to cast a variety of movements like the type of pitch baseball.