A car is moving with constant speed on a rough banked road.
Figure shows the free body diagram of car in three situation A, B and C respectively:-

Question

A car is moving with constant speed on a rough banked road. Figure shows the free body diagram of car in three situation A, B and C respectively:-

G1 Physics · Accepted Answer

On a banked road, friction down the slope corresponds to a speed above the no-friction design speed, while friction up the slope corresponds to a lower speed. Reading the three FBDs accordingly gives v(A)>v(C) and v(A)<v(B). Hence A and B.