Force of friction lab report assistant5/18/2023 The tube length that will provide maximum speed is determined by how long you can keep blowing strongly enough to maintain enough pressure in the tube so that the force produced on the marshmallow is larger than the friction force. Most people have a hard time understanding friction because the term is used to describe a force that works in various ways. Since the force acts for a longer time, the marshmallow is going faster when it leaves the tube, and it therefore travels farther. Vectors and Forces Getting Hung Up by Tension Lab, html Sign Hanging Lab, html Maximum Load Lab, html Science Friction Adventure Lab, html Inclined Plane. When the marshmallow is at the end of the tube that's closest to your mouth, it experiences an unbalanced force for the entire length of the tube as you blow on it. ![]() ![]() The unbalanced force on it doesn't last very long, so the marshmallow doesn't accelerate very fast or travel very far. Draw below a free body diagram for the block while is pulled by the sensor: 5. To measure the force of friction Fk, use the force sensor. In this experiment we have to estimate the relationship between FN, FF and µ (coefficient of friction). PART 2 Friction vs Normal Force When pulling horizontally on a level surface, the normal force is the total weight (mg) of the block plus any added mass. The coefficient of static friction is higher than the coefficient of kinetic frictionbecause it requires more force for the object to start moving. Force of gravity tries to pull the box down and normal pull force (FN) in opposite direction to the gravitational pull force. When the marshmallow is at the far end of the tube away from your mouth, it falls out of the tube almost as soon as you blow on it. FF is the frictional force that is in opposite direction to the tension force. But the faster the marshmallow is traveling when it leaves the end of the tube, the farther it will travel before hitting the ground. A laboratory report has three main functions: (1) To provide a record of the experiments and raw data included in the. The speed of the marshmallow will keep increasing for as long as the marshmallow experiences an unbalanced force.Īs soon as the marshmallow leaves the tube, your blowing no longer affects it. According to Newton's second law, F = ma, an unbalanced force accelerates an object. Increase the normal force between the surfaces by adding mass (200-500g) on top of the dragged object. Record the pulling force, including units. ![]() As long as this force is greater than the friction force, there's an unbalanced force on the marshmallow. Use the spring scale (in lbs) to measure the force which is required to drag the object at a slow constant speed along the horizontal surface. The Lab Report Assistant is simply a summary of the experiments questions, diagrams if needed, and data tables that should be addressed in a formal lab report. While the marshmallow is in the tube, your blowing increases the air pressure in the tube, creating a force on the marshmallow.
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