Click here to download the catalog as a PDF file. To view this site you need Adobe Flash Player and your browser must allow javaScripts. Go here to get the latest Flash Player. Human Dynamics Cart! Let your students become a part of the experiment! Active involvement turns into fun physics! When a student sits on the Dynamics Cart they actually become part of the experiment, creating a real world experience that teaches concepts like Newton’s First Law. Misconceptions are quickly dispelled as students get a first hand look from inside the experiment to help them understand and remember key concepts. P3-3617 Human Dynamics Cart $159 Force & Motion Newton’s Third Law Rocket Sit solidly on the Human Dynamics Cart and securely hold a carbon dioxide fire extinguisher. Trigger the fire extinguisher. The expulsion of mass from the extinguisher will cause the cart (and rider) to roll dramatically backwards! Note: This demo should only be done by teachers. LESSON IDEA “I hear and I forget. I see and I remember. I do and I understand!” arborsci.com Find more human-sized experiments in Arbor Labs at www.arborsci.com. Super low friction rollerblade wheels. School floor friendly with excellent performance! Rotational Inertia Demonstrator A beautiful and engaging investigation of angular motion Observe the angular acceleration of the apparatus, and investigate the effects of changes in torque and inertia. Simply move the rope to a pulley of different radius to change the torque, or move the mass on the arm to change the moment of inertia. Qualitative observations are a snap, and students can easily see the dramatic effects of their adjustments. The apparatus lends itself to accurate quantitative experimentation as well, with two ways of finding the moment of inertia: theoretically, according to the component masses and their dimensions, and experimentally, by measuring the angular acceleration for a given torque. P3-3545 Rotational Inertia Demonstrator $99 Ring Stand and Hooked Mass are not included. Inertia apparatus NEW! Demonstrate inertia and Newton’s First Law in a memorable way! This classic apparatus is standard for a reason — it works, and it’s impressive! Rest the ball on top of the square that is set on the vertical post. Release the spring and the square is projected out. The ball falls into place on the post, remaining at rest as if nothing happened. P3-3524 Inertia Apparatus $14 Release the spring; what will happen? Test students’ understanding of inertia. Easily change weights and gear size for quick comparisons. To order visit arborsci.com 19