theelastic constant. A stress versus deformation graph will also be obtained, so that the elastic constantcan be related to the modulus of elasticity, both properties associated with the stiffness of thematerial. As comparison, the elastic constant will be determined using weights, as is usually donein Physics laboratories. The script asks the group to reflect on the elastic constant of differenteveryday objects and encourages exploration of introductory concepts of Materials Science andEngineering.Project 3 – Conveyor belts and robotic arms at the Advanced Manufacturing Laboratory (Figure6c): a simulated assembly line represents an opportunity to study kinematics and static equilibrium.Treating the roller conveyor belt as a frictionless inclined
shape of spacetime curvature, therelationship between time and gravity, and the direction objects move in curved spacetime.These questions were developed specifically for this study, as the Relativity Concept Inventoryonly contains questions about SR and not GR [13]. For a complete list of survey items used,see Appendix B. The pre-post surveys can be compared between the two groups to see howthe different demonstrations affected participants’ understanding of these topics.Participants’ rate their agreement with nine statements on a standard five-point Likert scale torecord their attitudes toward GR, physics, and science in general. These statements are largelydrawn from [25] but modified for undergraduates and to reflect the focus on
analysis of the and reflectively expected results with the theoretical model and the experimental results obtained.In the laboratory classes, the students were divided into teams of three or four members.Each team was provided with a spring and one type of an elastic bands (each one can beassociated with a specific color): a) The minimum resistance – yellow one; b) Low-intermediate resistance - blue one; c) Upper-intermediate resistance - red one; and d) Themaximum resistance – black one. Both materials were characterized for an interval rangingfrom 0 to 40 cm with a 2.0 cm step. Then the characteristic curves (force as function ofelongation) were obtained and the data was analyzed using