The upper half of an inclined plane with inclination ϕ is perfectly smooth while the lower half is rough. A body starting from rest at the top will again come to rest at the bottom if the coefficient

Question

The upper half of an inclined plane with inclination $ϕ$ is perfectly smooth while the lower half is rough. A body starting from rest at the top will again come to rest at the bottom if the coefficient of friction for the lower half is given by

Question diagram: The upper half of an inclined plane with inclination ϕ is pe

Options:

Answer:

C

Solution:

$m g s sin ϕ = μ m g cos ϕ \cdot \frac{s}{2}$

TestHub · Accepted Answer

m g s sin ϕ = μ m g cos ϕ ⋅ 2 s ​

Physics - NLM Question with Solution | TestHub

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Doubts & Discussion

JEE Advanced (2027)