Page 11 - Demo

Your Safer Source for Science
FORCES, continued
Free Fall—Student Laboratory Kit
An economical way for students to test Galileo’s famous hypothesis—acceleration due to gravity is independent of mass. Use this kit to dispel the myth that “heavier objects fall faster.” Students time the free fall of a large and a small sphere and calcu- late the acceleration due to gravity. Kit includes 10 large and 10 small steel ball bearings and 10 foam pads. Timers sold separately.
AP7376 | $51.20
Free Fall and Projectile Motion
This large, colorful poster captures the motion of falling objects in a fun and dynamic way. The parabolic path of a projectile is clearly contrasted with the verti- cal drop of a free-falling object. Durable 24" x 36" laminated poster is a great teach- ing tool and a convenient reference for exploring the independent horizontal and vertical components of projectile motion.
AP7280 | $16.45
Bottle Balance Beam—
Poster
Demonstration Kit
This balancing act will be a real attention getter! Students will remember the concept of the center of gravity involved in this demonstration. A large water-filled bottle and a wooden board seem to defy gravity as together they balance on the board’s edge. You have to see it to believe it! Includes detailed instructions and a repro- ducible student worksheet.
AP6376 | $13.90
Investigating Gravity—Super Value Laboratory Kit
Investigate four principles of gravity with one kit! Students study the motion of a pendulum, the center of gravity of irregular objects, acceleration due to gravity and the anti-gravity force known as buoyancy. Standard equipment, such as support stands, clamps, cylinders, beakers, stopwatch and two 200-g hooked masses are required but not included. Complete for 9 student groups.
AP7188 | $91.70
Objects fall with the same acceleration— don’t they? Watch and compare the falling acceleration rate of a feather and a guinea (coin) with air resistance and in a vacuum using this clear acrylic demonstration
tube. The stopcock valve allows you to evacuate the tube of air with a vacuum pump. Vacuum pump and vacuum tubing are required and available separately. A two-stage vacuum pump is recommended.
AP4670 | $92.35
Guinea and Feather Tube—
Demonstration Kit
FLINN SCIENTIFIC
I FORCES 9