- #1
ellomoto135
- 2
- 0
What are the equations that can be used to calculate friction, be detailed i don't know much about.
What are the equations to calculate friction
- Thread starter ellomoto135
- Start date
-
- Tags
- Friction
Click For Summary
SUMMARY
The discussion focuses on the equations used to calculate friction in various scenarios. For stationary surfaces, the friction force is part of the reaction force, calculated as if the surfaces are fixed. For moving surfaces, the kinetic coefficient of friction (µk) is utilized, with the friction force determined by the equation F_friction = µkN, where N represents the normal force. When surfaces are "about to move," the static coefficient of friction (µs) is applied, using the equation F_friction = µsN.
PREREQUISITES- Understanding of normal force in physics
- Familiarity with coefficients of friction (static and kinetic)
- Basic knowledge of Newton's laws of motion
- Ability to interpret tables for coefficients of friction
- Research the differences between static and kinetic friction coefficients
- Learn how to calculate normal force in various scenarios
- Explore practical applications of friction in engineering
- Study the impact of surface materials on friction coefficients
Students studying physics, engineers working on mechanical systems, and anyone interested in the principles of friction and its calculations.
- #2
tiny-tim
Science Advisor
Homework Helper
- 25,837
- 258
welcome to pf!
hi ellomoto135! welcome to pf!
there isn't much to say …
if the surfaces aren't moving, and aren't "about to move", the friction force is simply part of the reaction force … you calculate it exactly as if the surfaces were fixed together
if they are moving, you have to look up the kinetic (dynamic) coefficient of friction, µk, in a table (or it'll be given in an exam question), and then …
if they are "about to move", you have to look up the static coefficient of friction, µs, in a table (or it'll be given in an exam question), and then …
hi ellomoto135! welcome to pf!
there isn't much to say …
if the surfaces aren't moving, and aren't "about to move", the friction force is simply part of the reaction force … you calculate it exactly as if the surfaces were fixed together
if they are moving, you have to look up the kinetic (dynamic) coefficient of friction, µk, in a table (or it'll be given in an exam question), and then …
the friction force is µkN (where N is the normal force)
if they are "about to move", you have to look up the static coefficient of friction, µs, in a table (or it'll be given in an exam question), and then …
the friction force is µsN (where N is the normal force) 