The coefficients of friction s=0.4 and k=0.3 for static and kinectic friction between block A and B, respectively.Block B rests on a smooth surface.Determine the acceleration of each block if a force of 50 kg acts on the block A.
Free body diagram-
The forces acting on each block are as shown in the FBD.Block A has a force A acting on it and a frictional force opposing its motion.Block B has the frictional force acting on it at the interface between A and B.
Equations of Motion-
For the force applied consider the motion of the block A to right.
This is contradictory to the