It is difficult to understand the Coriolis force, one of the inertial forces. The main reason is that we cannot experience the Coriolis force in our daily lives. To understand the Coriolis force, we first obtained the trajectory of a free particle in a rotating coordinate system by coordinate transformation of its trajectory in an inertial system. Then, by solving the equations of motion including inertial forces in the rotating coordinate system numerically to obtain the trajectory of the free particle and comparing it with the trajectory obtained by the coordinate transformation, it became possible to understand that the centrifugal force and Coriolis force determine the trajectory in the rotating coordinate system. Furthermore, by visualizing the trajectories of particles and inertial forces, it is possible to understand the relationship between inertial forces and trajectories. For visualizations and calculations, we used SageMath, which is a free computer algebra system software. The usefulness of SageMath is also clarified.
コリオリカ
083_097_伊藤先生
(9.61MB)
