Breckland Scientific 2023 Catalogue

Forces & Motion

Gravity

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1 FALLING BODIES APPARATUS This simple but effective apparatus demonstrates that two projectiles launched at the same time, but with different trajectories, will hit the ground at the same time due to the force of gravity. In this case, one steel sphere is launched horizontally from a spring-loaded L-shaped arm at the same time as an identical steel sphere is allowed to fall freely from the same height, but vertically. Both spheres will hit the ground at the same time. Launching mechanism is mounted on a wooden block, which can be clamped to a bench top, and comes complete with 2 steel spheres. The wooden block also incorporates an integral storage pocket for the spheres. Dimensions: 180 x 60 x 30 mm. Cat No. Description Price Per FMF-070-100 Falling Bodies Apparatus 19.60 ea. 2 G-BALL The g-ball provides a simple, fun and cost-effective way of measuring the acceleration due to gravity or ‘g’ by freefall. At slightly larger in size than a baseball, this 100mm diameter ball can be dropped from heights up to 12 metres. Although the components are robust, it is advisable to drop the ball onto a soft surface such as grass or carpet. The g-ball contains an accurate digital timer, which can display times from 0.01 to 29.99 seconds (i.e. 0.01 second resolution). The display is reset to zero simply by holding down the button. By releasing the ball from a measured height, timing starts when the button is released as the ball is dropped, and stops when it hits the ground. The acceleration due to gravity can then be calculated using the time displayed and the known height the ball has been dropped from. Includes 2 x SR54 cell batteries for the LCD display. These are easily replaceable. Dimensions: 100mm diameter. Experiments to try with your g-ball: 1) Determine ‘g’ by dropping the ball from a known height. 2) Throw the ball straight up. What height did the ball reach? What was its maximum speed? 3) Release the ball from a known height. Repeat the experiment from the same height but this time throw the ball sideways. Cat No. Description Price Per FMF-170-100 g-Ball 26.00 ea. BAT-250-250 SR54 Cell 2.76 ea. 3 GUINEA & FEATHER APPARATUS - ACRYLIC This Acrylic (Plexiglass) tube allows the Guinea & Feather experiment to be demonstrated. The tube comes supplied with a stopper at each end and a robust 2-way tap to allow a vacuum pump to be connected. Small objects, to represent a guinea & feather, should be placed inside the tube before connecting to a vacuum pump. Once sufficient vacuum has been attained, the tap can be closed and the tube removed from the vacuum line. When the tube is turned on end, the objects inside fall at the same rate - proving that the acceleration due to gravity is independent of the mass of the body, in a vacuum. Tube dimensions: Diameter 40mm; Length 1 metre. Requires a vacuum pump (not supplied). Cat No. Description Price Per FMF-160-100 Newton’s Tube Acrylic 41.93 ea. 4 LASCELLS CENTRE OF GRAVITY SHAPES This kit contains all of the necessary apparatus for a class to determine the centre of gravity of an irregularly shaped object. The kit contains 3 sets of 5 irregular acrylic shapes, 15 pins and 15 pendula allowing a full class to complete the experiment. Cat No. Description Price Per FMF-545-110 Centre of Gravity Shapes 50.00 ea.

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Falling Bodies Apparatus

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G-Ball

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Guinea & feather Apparatus

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Centre of Gravity Shapes

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