PHYS 211 Chapter Notes - Chapter 6: Friction, Dynamic Equilibrium, Gravitational Constant
Document Summary
Secion 6. 2: newton"s 2nd law problems see notes. Mass: an intrinsic property: intrinsic property = tells us something about the object regardless of where it is or what force is acing on it. 2 r: gravity is an atracive, long range force between any two objects, gravitaional constant, g = 6. 67 x 10, force gets weaker as objects get farther apart (fg is inversely proporional to distance, r) Slips when: fs = fs max fs < fs max is not possible fs max = s n: coeicient of staic fricion depends on the materials. Rolling fs fk= r n k n fr= r n. Moion = moion relaive to the surface fs max occurs when the object slips and begins to move. Drag force is 1) opposite in direcion of velocity and 2) increases in magnitude as the object"s speed increases. Drag depends on the object"s shape and density of medium it moves through.
