QJEEM20Phb3d8: JEE Main 2020 Physics - Class 11 JEEM20Phb3d8 Solution: A small block starts slipping down from a point B on an…

A small block starts slipping down from a point B on an inclined plane AB, which is making an angle $\theta$ with the horizontal section BC is smooth and the remaining section CA is rough with a coefficient of friction $\mu$ . It is found that the block comes to rest as it reaches the bottom (point A) of the inclined plane. If BC = 2AC, the coefficient of friction is given by $\mu$ = ktan $\theta$ . The value of k is _________.