Unit 5: Free body diagrams

            Today we continued Unit 5 and learned about free body diagrams. We also learned about the four types of force that are involved in free body diagrams. Weight force, Normal force, Friction, and Tension force. Weight force is how much something weighs. Normal force has to do with contact. Friction is what slows objects down it goes the opposite direction that the object is going.

            After we learned the different types of forces we learned how to set up the problem. The first step was to read the problem, then we were supposed to determine the forces that are acting upon the object, and finally were had to determine the direction that each force is acting.

            We also learned how to construct a free body diagram. We would draw the object as a point or box, then draw each force as an arrow, then attach each arrow to the point or box, and finally aim the tip of each arrow in the direction the force is acting in.

              In this picture if we were to make a free body diagram of the earphones we would be able to see the forces. The weight force is pushing down with gravity and the normal force is pushing up with the force from the ground.