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. Force & Motion Newtonian Demonstrator This familiar apparatus dramatizes Newton’s Third Law,which states that for every action there is an equal and opposite reaction. Use to illustrate that momentum and kinetic energy are conserved. Lift and drop one ball, and one shoots out from the opposite side; start with two balls, and two shoot out, etc. Apply all the logic and laws of physics you want to this little gadget — it’s still amazing! Includes an instruction sheet outlining the principles involved plus tips on use and storage. Size is 9"H x 7"W x 9"L. P1-6001 $24 Mini Newtonian This miniature version of the classic collision demo is perfect for your desk. Size is 6"H x 4"W x 5"L. P1-6002 Mini Newtonian $16.95 The Mini Newtonian makes a great gift idea! Large or small — Students can’t resist exploring and learning about collisions and conservation of momentum! Newton’s Laws, Collisions, and Acceleration These Dynamics Carts are Guaranteed for Life! High-impact plastic carts for any mechanics experiment involving linear motion. The three ball-bearing wheels provide smooth operation, and the top is designed to accommodate our accelerometer or up to five ordinary bricks as test masses. One cart includes a spring-loaded plunger for initiating repeatable collisions at two different tensions. Long rubber bands are included for applying constant forces to the carts. Carts can be used with any motion sensor or tape timer. 12" long. P3-3530 Dynamics Carts (Set of 2) $45 6 or more $43 Shown: 1 set Dynamics Carts (P3-3530) and 1 Liquid Accelerometer (P3-3525) Liquid Accelerometer For a memorable visual representation of acceleration, add our companion Liquid Accelerometer. Add colored water to this transparent cell and align it with linear or centripetal acceleration. The water creates a line graph in response to the acceleration. The wooden base fits nicely in our Dynamics Carts for studying linear motion. You can also hang the cell from strings and study acceleration in rotating or oscillating systems! Food coloring and instructions included. 10.5" x 5.5" P3-3525 Liquid Accelerometer $47 6 or more $44 Dynamic Celt A Stanford dynamics professor invented this large, adjustable Celt as a demonstration for his students, and now you can have one too. EXCLUSIVE! This enhanced version of our favorite ancient toy has an adjustable bar that lets students vary the mass distribution for their own investigations. Experiment to see what orientation leads to the characteristic wobble-and-spin motion. A traditional Celt (p. 61) tends to spin in one direction, but the Dynamic Celt can be adjusted for simple spin in either direction, rocking that becomes spin, or rattling/wobble with spin-reversal! The included explanation will enhance any study of rotational motion, with information on moment of inertia, point of contact, and product of inertia. P2-2140 Dynamic Celt $69 Adjustable to favor rotation in either direction, or rattle and wobble with spin reversal! To order visit arborsci.com 17