Question bank/JEE Main/Physics

In the figure shown a block A of mass m is kept on block B of
mass m. A is given a velocity towards right as shown. The coefficient of
friction between A and B is $\frac{3\mu}{2}$ and that between B and
ground is$\ \mu$.

AB will accelerate towards right with acceleration$\frac{\mu g}{2}$.BB will accelerate towards left with acceleration$\frac{\mu g}{2}$CB will not accelerate at all.DB will move towards right with acceleration$\ \mu g$.

Show answer and solution▾

as$f_{k^{'}\max} > \frac{3}{2}\mu g$
So it will not move

Source: Grass-G / P-18 Physics paper 27 Nov Third.docx