A block of mass m slides down an inclined plane as shown in Figure 3.2. The surface of the plane is rough, and the contact between the block and the plane creates a frictional force on the block that...

A block of mass m slides down an inclined plane as shown in Figure 3.2. The surface of the plane is rough, and the contact between the block and the plane creates a frictional force on the block that retards its motion down the plane. The frictional force
 is proportional to the magnitude of the normal force exerted by the inclined plane on the block. What is the velocity of the block at steady state?