Tired of that smug ball?
$19.97
Is that annoying tennis ball on top of a paper towel roll sitting there and annoying you?
Well take it down! Using state of the art technology, we have created a machine capable of doing just that.
For those of you over the age of 70 and have trouble moving, The Ball Knocker might be just the thing for you
Inclined plane
The ball gains speed when going down the inclined plane.
Lever
The cup pushes on the bottom of the paper towel roll
Wedge
The stick acts as a wedge because when pushed, it creats space in beteween the ball and the cup.
Machine contains multiple machines
Our contraption is made up of three simple machines: the wedge, the lever, and the inclined plane.