A block B of mass $$5kg$$ is placed on a slab A of mass $$20kg$$ which lies on a frictionless surface as shown in the figure. The coefficient of static friction between the block and the slab is $$0.4$$ and that of kinetic friction is $$0.2$$. If a force F $$=$$ $$25N$$ acts on B, the acceleration of the slab will be

Question

Infinity Learn · Accepted Answer

Maximum force upto which A and B will move together is given by. Fmax $$=$$ µ$$smg(1+m/M)$$, where m $$=$$ mass of B and M $$=$$ mass of A. Fmax $$=$$ $$0.4$$ x $$5$$ x $$10$$ $$(1+$$ $$5/20)N$$ ⇒ $$25N$$ so A and B will move together and their acceleration is

A block B of mass 5kg is placed on a slab A of mass 20kg which lies on a frictionless surface as shown in the figure. The coefficient of static friction between the block and the slab is 0.4 and that of kinetic friction is 0.2. If a force F = 25N acts on B, the acceleration of the slab will be

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material