Real Life Situations? Static vs. Kinetic friction

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Static friction is typically greater than kinetic friction in real-life scenarios involving dry surfaces, as static friction must be overcome to initiate movement. Examples include objects at rest on inclined planes or stationary items on a surface. However, at high velocities, such as in drag situations, kinetic friction can exceed static friction due to dynamic interactions. The challenge lies in identifying scenarios where kinetic friction consistently surpasses static friction, as this is generally not the case. Understanding these frictional dynamics is crucial in various applications, from engineering to everyday activities.
JChoi137
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Real Life Situations?

Hey everybody. I was just wondering if there are any real life situations where the static friction of an object will ALWAYS be greater than the kinetic friction. Please let me know! Thanks!
-J
 
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Just about any application of dry friction between surfaces will satisfy that requirement. I challenge you to find an example where kinetic friction exceeds the maximum static friction.
 
Your example would be drag, of some form. At sufficient velocities, I imagine every pair of dry surfaces can eventually have kinetic friction exceeding maximum static.
 
For simple comparison, I think the same thought process can be followed as a block slides down a hill, - for block down hill, simple starting PE of mgh to final max KE 0.5mv^2 - comparing PE1 to max KE2 would result in finding the work friction did through the process. efficiency is just 100*KE2/PE1. If a mousetrap car travels along a flat surface, a starting PE of 0.5 k th^2 can be measured and maximum velocity of the car can also be measured. If energy efficiency is defined by...

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