Lecture
This lecture introduces additional force models beyond gravitational and frictional forces, such as Coulomb's force between point charges, electric field force, Lorentz force in a magnetic field, and various friction models including static and kinetic friction. The instructor explains the mathematical expressions for these forces and provides examples to illustrate their applications in different scenarios, such as charge interactions, capacitor plates, and object movements on surfaces with friction. The lecture also touches on viscous forces in fluids, discussing the impact of viscosity, object shape, and fluid density on the drag force experienced by moving objects.