Suppose all the surface in the previous problem are rough, the direction of friction on B due to A

Suppose all the surfaces in the previous problem are rough. The direction of friction on B due to A

Suppose all the surfaces in the previous problem are rough. The direction of friction on B due to A

Suppose all the surfaces in the previous problem are rough. The direction of friction on B due to A

In the arrangement 2 of previous problem, the direction of the net force is

All surfaces as shown in the figure are rough. Draw the friction force on A & B

Consider the situation of the previous problem. The directions of the magnetic field due to the dipole are opposite at

Consider the situation of the previous problem. The directions of the magnetic field due to the dipole are opposite at

In the above problem, direction of friction force is

"When a person walks on a rough surface the frictional force exerted by the surface on the person is opposite to the direction of his motion". Is it true or false ?