GIZMO Inclined Plane -Simple Machine (ALL ANSWERS ARE CORRECT)

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Inclined Plane – Simple Machine Student Exploration Answer Key Vocabulary: coefficient of friction, efficiency, force, free-body diagram, friction, inclined plane, mechanical advantage, mechanica... l energy, normal force, resultant force, simple machine, vector, work, work-energy theorem Prior Knowledge Questions (Do these BEFORE using the Gizmo.) [Note: The purpose of these questions is to activate prior knowledge and get students thinking. Students are not expected to know the answers to the Prior Knowledge Questions.] Jan is moving to a new apartment. She needs to load her sofa and other large furniture into a moving van. The rear of the moving van is 1.5 meters high. 1. What could Jan use to make loading furniture on the van easier? Answers will vary. Sample answer: Jan could use a ramp to load the furniture. 2. Why would this help? Answers will vary. Sample answer: By using a ramp, Jan would not have to directly lift the furniture into the back of the truck. Gizmo Warm-up A simple machine can be used to make tasks like lifting heavy weights easier. One example of a simple machine is a ramp, or inclined plane. You can use the Inclined Plane – Simple Machine Gizmo™ to see how inclined planes can help to lift objects. On the CONTROLS pane, make sure the Angle is 30°, the Coeff. of friction is 0.00, and the Weight is 300 N. 1. The brick has a weight of 300 newtons (N). How much force would it take to lift the brick straight up? Slightly more than 300 N 2. Set the External force to On. Set the Applied force to 100 N and click Play ( ). What happens? The brick and car slide down the ramp. 3. Click Reset ( ). Using the Gizmo, find the smallest force that is required to push the block [Show More]

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