There are two inclined surfaces of equal length and same angle of inclination with the…
Physics · NEET · NTA Exams — Laws of Motion
There are two inclined surfaces of equal length 
and same angle of inclination 
with the horizontal. One of them is rough and the other is perfectly smooth. A given body takes 2 times as much time to slide down on rough surface than on the smooth surface. The coefficient of kinetic friction 
between the object and the rough surface is close to [NEET 2025]
and same angle of inclination with the horizontal. One of them is rough and the other is perfectly smooth. A given body takes 2 times as much time to slide down on rough surface than on the smooth surface. The coefficient of kinetic friction between the object and the rough surface is close to [NEET 2025] - 0.25
- 0.40
- 0.5
- 0.75
Answer
(B) 0.40
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