PHYS 1501Q Chapter Notes - Chapter 6, 7: One Direction, Conservative Force, Friction

• School: UConn
• Department: Physics
• Course: PHYS 1501Q
• Professor: Diego Valente

Document Summary

Forces between two surfaces of objects with mass. Friction force - direction is always in opposition to the relative motion of the surfaces. Kinetic friction - sliding friction, objects do move relative one another. Static friction - stationary, objects do not move relative to one another. Depends only on the properties of the surfaces of the objects. Not on the size or weight of the object. Friction force opposes acceleration, points to the left mg a g. The negative sign indicates that the friction is pointed towards the. Example: when you pull a box with a rope and it does not move until you pull very hard. N f max = s f s s. Max force you can apply before an object moves (when there is friction) N = perpendicular force between the two surfaces. Example: box sliding down ramp (at an angle) X-component of force of gravity causes acceleration down the ramp.