![]() Lastly, we included the friction force which we calculated from the normal force found in step 2. Third, we put in the applied force, which was given in the problem. Once you know gravity, you can automatically know the normal force because, being on a horizontal surface, the normal force is equal to the gravitational force, just in the opposite direction. ![]() Step 1 would be to include the force of gravity. However, I decided to include the forces in order in which you should complete them logically. ![]() So a typical free body diagram wouldn’t have all the calculations included, they would be limited to the object, the forces acting on it and that’s it. The free body diagram would like like the following: The box’s mass is 10kg and is moved along a surface with a coefficient of friction equal to 1.82. Supposing you are pushing a box with 1000N of force. There’s no better way to understand this than to look at an example. From the center of this rectangle, we then draw all the forces being placed on this object, using arrows pointing AWAY from the center of the object. In these diagrams, the object that the forces are acted upon is visualized using a simple rectangle, with its mass indicated inside. It is therefore important to know how to integrate these forces into a convenient diagram known as a Free Body Diagram. ![]() There may be situations where 3 or 4 or 5 or more forces are acting on an object. From here on, we need to know how to compile all the forces together in a single problem. ![]()
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