Free body diagrams are where you simplify each object to a point and draw all of the forces acting upon it. I am having difficulty understanding it entirely and it would really help to just have a bunch of examples of free body diagrams. If you have a link to a bunch that would be great. I also need help because I can not figure out how to draw free body diagrams for the following. If you can help explain principles that would help me draw them, draw them, or describe them then that would be great. A box that is on an incline but is not moving Box that is pushed by a human with horizontally applied force at constant speed A box is accelerating while moving down an incline Two boxes on other sides of pulleys, the system is accelerating. Also is normal force smaller if an object is being pushed even if the push is entirely horizontal? For example a rope that is pulling a box at an angle, the box has a smaller normal force then if it were just sitting there.