Sketchy Physics
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Sketchy Physics
Sketchy Physics Overview
Sketchy Physics[1] is a plug-in application for Sketchup[2] a free three-dimensional modeling program developed by Google. It provides real-world simulation with gravity, collisions and interactions with other objects. It is easy to use and far less expensive (free), has many of the same features as other "mid and high-end" modeling programs like SolidWorks, Inventor, ProEngineer or CATIA. The simple and intuitive program interface allows the student to quickly learn and use the basic functions of the program.
Sketchup uses Ruby[3] a general purpose object oriented programming language, which allows users to develop plug-in modules for Sketchup. Sketchy Physics is one such plug-in application.
Tutorials and more can be found at SketchUcation.[4]
Tools
Currently only primitive shapes like a box, sphere, cone and cylinder can have phyical attributes applied, but these shapes may be combined into groups to construct almost anything. The program interface uses a set of tools that will apply physical constraints to object surfaces, edges and points.
Hinge is like a door hinge. But it can also be a wheel. Hinge is the joint you will use most often.
Slider allows the object to move like its on a rail.
Corkscrew is a combination hinge and slider.
Spring is like a slider but the object will try to "spring" back to its original position.
Universal joint is like 2 hinges at right angles to one another.
Ball joint will allow an object to move freely around a single point.
Classroom Applications?
Using Newton's Laws in a Virtual World
Sketchy Physics allows a student to apply thier prior knowledge about how the world works to construct, control and animate motion in a virtual world. The application allows the student to exercise creativity in designing objects and then apply the laws of motion and physical properties to these objects. The simple and intuitive program interface allows the student to quickly learn and use the basic functions of the program.
Using Sketchy Physics in a Math Class
Possible lessons on:
Exploring geometric shapes utilizing and enhancing the work they are doing in math class.
A unit on measurement of area and volume using the virtual measurment tools of protractor and ruler.
A unit exploring Cartesian Coordinates.
SketchUp in Architectural Design
Sustainable Design
Students can study design concepts such as shape, volume, light, and shade with simple model representations of architectural designs. Sun and shadows can be used to study passive solar accessibility. An animation can simulate a time-lapse effect to illustrate shadow patterns for long summer days and short winter days.
SketchUp in Mechanical Design
Visualization & Simulation
Students can study mechanical simulation with sketchy physics' motion tools. Gear motion and part collision detection can be easily studied from virtually any angle. This virtual physical laboratory environment can lead to design innovation and optimization by being able to study part interaction.
