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The friction acting before an object begins to slide is distinguished from the friction acting once it moves. The first is called:
ASteady friction
BSolid friction
CSurface friction
DStatic friction
Answer & Solution
Correct answer: D. Static friction
1. Nothing is sliding yet.
2. Once sliding starts, the other kind takes over.
3. The first is static friction, the second kinetic friction.
_Source: NCERT Class 11 Physics Part I, Chapter 5, Laws of Motion._
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