PHY202H1 Lecture 4: PHY202 Week 4
Document Summary
Electric force: there are two types of electric charge. We call them positive and negative electron charge. Repulsive force, when the objects have the same net electric charge. Attraction force, when the objects have the same net electric charge. The electric force between two objects is f = kq1q2/ r2 . where k is a constant q1 & q2 is the net electric charge of object 1 and 2, and is the distance between the objects. An object is neutral, if it has similar number of positive and negative electrons. Repulsion of magnets, bringing two similar poles together. Attraction of magnets, bringing two different poles together. When a moving object is in a charged magnetic field b, it experiences a magnetic force. An object with net electric charge q experiences an electric field e. the electric force on the object is f = qe. Initial conditions: mechanics: an objects motion depends on the initial conditions.
