The normal force acting upon the car is best represented by arrow

.

The force of gravity acting upon the washers is best represented by arrow
.

The applied force on the car is best represented by arrow
.

The normal force acting upon the car is best represented by arrow

⇧.

The force of gravity acting upon the washers is best represented by arrow
⇩.

The applied force on the car is best represented by arrow
⇨.