A given object takes n times more time to slide down a … rough inclined plane as it takes to slide down a perfectly smooth … incline. The coefficient of kinetic friction between the object and the incline is :

Option B. Let, t₁ and t₂ are time taken to move on the smooth and rough surface for smooth surface,

Laws of Motion

JEE Main 2018 · 15 Apr, Morning shift · Q7552

PhysicsMedium68×since 2002Q7552

A given object takes n times more time to slide down a

{45^ \circ }

rough inclined plane as it takes to slide down a perfectly smooth

{45^ \circ }

incline. The coefficient of kinetic friction between the object and the incline is :

JEE Main 2018 · 15 Apr, Morning shift · Q7552

PhysicsMedium68×since 2002Q7552

A given object takes n times more time to slide down a

{45^ \circ }

rough inclined plane as it takes to slide down a perfectly smooth

{45^ \circ }

incline. The coefficient of kinetic friction between the object and the incline is :