Q3. A 2 kg brick begins to slide over a surface which is inclined at an angle of 45∘ with respect to horizontal axis. The co-efficient of static friction between their surfaces is: (1) 1.7 (2) 1 √3 (3) 0.5 (4) 1
What This Question Tests
Tests the concept of the angle of repose, where the coefficient of static friction is equal to the tangent of the inclination angle when an object just begins to slide.
Concepts Tested
Formulas Used
μ_s = tanθ
📚 NCERT Sections This Tests
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📋 Question Details
- Chapter
- Friction
- Topic
- Static Friction on Inclined Plane
- Year
- 2024
- Shift
- 04 Apr Shift 2
- Q Number
- Q3
- Type
- MCQ
- NCERT Ref
- Class 11 Physics Ch 5: Laws of Motion
More from this Chapter
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Q4. A block of weight W rests on a horizontal floor with coefficient of static friction μ. It is desired to make the block move by applying minimum amount of force. The angle θ from the horizontal at which the force should be applied and magnitude of the force F are respectively. μW (1) θ = tan−1(μ), F = F = √1+μ2 μW (2) θ = tan−1 ( μ1 ), √1+μ2 F = 1+μμW (3) θ = 0, F = μW (4) θ = tan−1 ( 1+μμ ),