PHYS 1080 Lecture Notes - Lecture 3: Electromagnetism, Fundamental Interaction, Net Force

• School: University of Guelph
• Department: Physics
• Course: PHYS 1080
• Professor: Jason Thomas

Document Summary

An interaction between two bodies, an object and an agent. A vector (it has both a magnitude and direction) Something without which there is no acceleration. Something which can be produced with or without contact. In 1080 we will see only the rst two of these - although the electromagnetic force manifests itself in many day-to-day" forces: These forces act only in contact; however, gravity, magnetic, electrostatic forces can act at a distance. If a force, f, acts on an object of mass, m, it will cause an acceleration, a, in the same direction as f. F = ma (vector) f x (vector) a (vector) f = (vector) f net = m (vector) a. We sometimes speak of these two forces as action-reaction pairs. Keep in mind, these two forces are exerted by different objects, on each other. The proportionality constant between the net force acting on an object and the resulting acceleration.