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A crate is pushed but does not budge. The surface force that cancels the push is called:
AThrust
BTorque
CFriction
DTension
Answer & Solution
Correct answer: C. Friction
1. The crate stays still, so the net force on it is zero.
2. Something along the surface must be opposing the push exactly.
3. That opposing surface force is friction.
_Source: NCERT Class 11 Physics Part I, Chapter 5, Laws of Motion._
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