Force Diagrams Practice 3

Free Body Diagrams - Gravity, Normal, Tension, Friction Watch the video and answer the follow-up questions to check your understanding. What are the two forces acting on the object in the first example? (stationary block on a table) What are the forces acting on the object in the second example? (block hanging from a string) What are the forces acting on the object in the third example? (pulling on the block with a rope, but it's not moving) Friction always _motion. opposes in the same direction as speeds up The next several questions are practice (the answers are not in the video). However, if you are stuck, please visit THIS LINK to practice some similar examples AND a description of how to work these problems out. A carrot hangs from a bar by two ropes. Label the forces acting on the carrot by clicking on the dot and typing word. tension tension gravity A block of cheese is pulled by a string and remains at rest. Label the forces acting on the cheese. normal tension gravity friction You take the elevator to the third floor. Draw and label the forces acting on you. (Under the star figure are options to insert boxes and lines. Be sure to indicate which direction the forces are acting and label each arrow) You push a box rightward down the hall over some rough carpet. Draw and label the forces acting on the box. A skydiver is in free-fall, falling toward the ground through the air. Draw and label the forces acting on the skydiver. A hockey player hits a puck across the ice with a leftward force. Draw and label the forces acting on the puck (it slides across the ice). Match the type of force with the correct description. gravitational the earth, moon, or other massively large object attracts another object towards itself. Always the downward direction. normal A support force, like a table, the ground, a wall tension When a force is exerted through a cable, string, rope, wire, or strap. A pulling force applied a force exerted on an object by a person or another object air resistance a frictional force that occurs when traveling through air. It opposes gravity friction the force when two objects rub against each other. Always goes against motion.