7/25/2023 0 Comments Algodoo physics simulation3.2 Quantitative analysis with AlgodooĪfter analyzing qualitatively the projectiles motion in the previous section, we present in this section the animation of a disk launch with an angle of 45 ∘ relative to the horizontal plane, with 15.0 m/s for the initial speed magnitude, in a region where is subjected to the action of gravity (acceleration g = 9.8 m/ s 2). In the figure shown the value of the angles a function of the color of the disc. Figure 4: Image of the oblique motions of disks with different launch angles made in Algodoo. A note can be added here: the ranges are equals for complementary angles (the sum equals 90 ∘, for example 30 ∘+ 60 ∘ = 90 ∘) this can also be obtained from kinematics equations, and is an efficient exercise for students, for practicing the simulation and calculations. The maximum range is represented by the black trajectory that has a launch angle of 45 ∘. This fact can be portrayed in our animation in Algodoo, by the pair of trajectories with angles of 15 ∘ and 75 ∘ (pink and blue), and 30 ∘ and 60 ∘ (yellow and red), which present the same range for different launch angles. In Equation 5, one can see that the maximum range A m a x occurs when the launch angle is 45 ∘, and for larger values the disc reaches positions at ranges already visited, when launched with smaller angles. Now, assuming an initial speed with module equals 12.0 m/s, common to all disks, and assigning to each disk different launch angles, from 15 ∘ to 75 ∘, we have produced different ranges for the movement, as observed in Figure 4. The aim this paper is to use Algodoo for didactic purposes. This simple theme has just been chosen to explore the software tools. In our initial tests in Brazil classes, the students have shown a quick and better understanding of the physical content when they used the Algodoo’s simulation. This tool can be applied to students from different education levels, and also to undergraduate and high school students. All simulations results will be compared to theory, by the equations of motion of the oblique motion. In the next step, we evaluated, through Algodoo’s graphical tools, the observed effects in the first stage, by calculating the maximum height, the particle’s range and the rise time. We also emphasize the modification of the velocity vector and its components along the motion. This study is organized in two stages: first we discuss a qualitative analysis of movement, emphasizing the trajectory of the object, while we control some parameters, in this case, the velocity magnitude and the launch angle. And it is addressed in the Algodoo environment, highlighting its easy manipulation. In this paper, we present a classic physics problem in high school and undergraduate courses: the oblique motion. The software is available for Mac, Windows, and iPad platforms. When used on a computer with internet access, the Algodoo makes available to the users the opportunity to publish or access multiple projects in a free dynamical database. For a deeper analysis, the software offers graphics display of several variables, and also the visualization of vector variables in the trajectories of objects. It still provides inventions, games or simulations of physical systems, present in the set menus of the classroom. All those real world properties can be switched on and off, whenever necessary. The software was developed to draw objects, which can be subjected to physical properties, and them simulated in a real environment such as gravity, air resistance, friction, elasticity, density, refractive index, forces, rotations, and so on. Algodoo presents a cartoon based environment, in which one can create scenarios using touch screen/mouse cursor, interacting with objects through clicks, drags, tilts and shakes. We can highlight the free simulation software Algodoo 2D (by Algoryx Simulation AB ). To avoid this situation, some companies have employed in their software accessibility protocols, to make the manipulation easier to any user. Various are the tools used to support the teaching/learning process, but they still face resistance from a many users, since they require training and specific knowledge of computational programming skills.
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