Newton's third law states that for every action, there is an equal and opposite reaction. During the collision between X and Y, the force exerted by X on Y is equal in magnitude but opposite in direction to the force exerted by Y on X. Since the time interval of the collision is the...
The nightmare pendulum appears to be an inverted double pendulum, with an additional uninverted pendulum swinging within its much more substantial weight (which is also adorned with archaic/mystical symbols). The comic claims that this pendulum summonsMaxwell's demon, jokingly implying that Maxwell’s...