Final answer:
The additional conservative force given by the nearly uniform distribution of dust in the solar system contributing to the gravitational attraction of the sun on a planet is the electromagnetic force.
Step-by-step explanation:
The additional conservative force given by the nearly uniform distribution of dust in the solar system contributing to the gravitational attraction of the sun on a planet is the electromagnetic force. This force arises from the interactions between charged particles, such as the electrons in the dust and the protons in the sun and planet. Unlike the gravitational force, which acts over large distances, the electromagnetic force can act over small distances and is much stronger. Understanding this force elucidates intricate interplays between particles in space, vital in comprehending celestial mechanics and phenomena, delineating diverse influences steering planetary motion within the solar system.