Get the Materials Down the Hill!
Students set up their prototype and load (a small cup) to test on the wooden ramp.Copyright 2024, Yamila Cancel-Sanchez & Ethan Shade
Students use readily available materials to design and build a device that transports a large amount of material down a hill. They must work within limited resources to construct their design. As they learn about motion and forces, students apply concepts of kinematics and dynamics to evaluate the performance of their system to determine the maximum weight it can safely carry down the hill in the least amount of time without breaking the rope. Finally, students perform a force analysis to calculate the acceleration of their load.
Civil engineers and construction managers often face optimization problems in their daily work. They must design systems and processes that move materials efficiently, safely, and cost-effectively. For example, when planning how to transport heavy loads on a construction site or how to design slopes, ramps, or pulley systems, they consider factors such as weight, tension, friction, time, and available resources. By applying principles of physics and engineering, they find solutions that balance safety, performance, and efficiency to achieve the best possible outcome within real-world constraints.
After this activity, students should be able to:
- Analytically and experimentally describe the kinematics and dynamics of the mass being transported.
- Calculate the acceleration of the mass being transported downhill.
- Experimentally prove that acceleration is directly proportional to the mass of the system.