Forces & Motion

This timer is most suited for an investigational approach for students to gain sound understanding of the concepts of time and motion. Two pairs of sockets alternately start and stop the timer, one pair operating in make mode, the other in break mode. The start/stop switches can be either mechanical or electronic. The timer is auto-ranging for ease of use and has clear 13mm digital display and has robust metal case with durable powder coat finish. An illuminated on/off switch is mounted on the rear panel adjacent to fused appliance inlet. • Electrical Supply: 220-240 V AC 50-60 Hz • Dimensions (W x L x H): 179 x190 x 85 mm • Mass: 1.6 kg • Ranges: 0 to 9.999s; 10 to 99.99s; 100 to 999.9s; 1000 to 9999s • Accuracy: ±0.01%

For use as a light operated timing gate. Comprises a photodetector and light source each housed in a robust ABS case spaced 40 mm apart on a plastic rod. Light source housing has a battery compartment and on/off switch. Photodetector housing is fitted with pair of 4 mm sockets to allow connection to electronic timers. When the timing gate is switched on it creates a short circuit between the two output sockets, this then becomes an open circuit each time the light beam is interrupted. Consequently the timing gate can be used as a remote switching device in wide range of dynamics experiments.

Apparatus for demonstration of Newton's 3rd law of motion which says that action and reaction are equal and opposite. The device is suitable for demonstration of momentum conservation. Dimensions: 124 x 110 x 153 mm. Ball diameter 20 mm.

This battery powered air puck can be used for 'frictionless' demonstrations, in similar way to the carbon dioxide (dry ice) pucks which used to be available. It is also fun way to play 'air hockey' on any flat surface. Two discs can be used together for demonstrating collision between objects. With its powerful hover action, the air powered soccer disc literally floats on cushion of air. The disk has soft outer rim to prevent damage as well as improving rebounding from any object it collides with. Can be used indoors or out. Requires x AA batteries (not included). Dimensions: 180 x 180 x 60 mm.

This flexible plastic ramp can be used to create slopes and curved tracks for use in dynamics experiments. Designed for use with small vehicles, the ramp comes with side rails to contain the vehicles. Tracks can be connected together by unscrewing an endplate and joining to another track. Dimensions: Track runway length 1.2 metres; Usable width of track 95 mm.

Operates at 6 V AC and produces dots on the tape using carbon paper disc at an electronically controlled frequency of 50 Hz. The unit is housed in rugged ABS case. Supplied with 40 mm carbon paper discs and 15 mm wide ticker tape.

Ticker Tape, 30 m x 15 mm for Ticker Tape Timer FO81625.

This timer is very robust and features an adjustable spring loading mechanism to ensure suitable ticker tape markings. Operates at 12 V AC. providing 50 Hz. Uses 50 mm dia. carbon discs and 9.5 mm wide tape.

Ticker Tape, 30 m x 9.5 mm for Ticker Tape Timer FO81650

Carbon Paper Discs, 50 mm diameter, for Ticker Tape Timer FO81650.

Designed to provide a smooth, flat, easily inclinable surface for dynamics experiments using trolleys. Complete with wooden side rails and plastic feet.

Designed to provide a smooth, flat, easily inclinable surface for dynamics experiments using trolleys. Complete with wooden side rails and plastic feet.

A pair of identical wooden trolleys mounted on low-friction wheels with spring plungers. The trolleys may be stacked on top of each other by the use of pins (supplied). Dimensions (L): 300 mm. (Wgt) 526 g

These unique precision Dynamics Carts are ideal for all basic dynamics experiments. Strong and rigid, they can take the weight of an adult without bending or breaking. They can be loaded with house bricks or similar weights for velocity, acceleration and collision experiments. Each cart is complete with firing button and 2 position spring loaded firing shaft with safety locking device to prevent accidental firing. These carts run straight and true and the wheels are of low mass and low friction. Each is accurately calibrated to be 600 g and are stackable. The approximate dimensions of the body are (LxWxH) 300 x 130 x 90 mm. Supplied as pair.

The Force Board is a good way to introduce students to Newton's Laws and vector addition, demonstrating the principles of the parallelogram and polygon of forces. The board, pulleys and masses (all included) allow for easy set-up of equilibrium conditions and consequent measurement of the forces involved. The background grid helps to visualise the direction of force and thereby to calculate the resultant vector. The back board is bench-standing and hard-wearing, with printed background grid, and has detachable feet for easy storage. The set includes ball bearing pulleys, three hooks, thread and mass set. Board dimensions: 400 x 550 mm (W x H)

For demonstrating the composition of force and for determining the coefficients of friction between different materials. Comprising of a wooden base, hinged inclined plane and pulley. Angles can be set between 24 and 45 degrees approx. Supplied with cylindrical metal roller and scale pan. Dimensions (L x W x H): 600 x 75 x 19 mm.

A simple and economical way to demonstrate the geometrical centre of gravity of two-dimensional objects, this apparatus comprises clear Perspex rod mounted on base, with a suspension screw at the top and four clear acrylic shapes circular, triangular, square and trapezoid. Each shape has suspension holes at various points around the edges. The point of intersection of lines drawn vertically down from the suspension point of or more holes gives the centre of gravity for each shape. For non-permanent markings, lines can be drawn using dry-wipe pens or similar.

This durable Projectile Launcher, of aluminium construction with hardened steel latches, has a string release trigger mechanism with 2 bore sights and pivots from horizontal to 90°. It comes with a 19 mm diameter ball which is easy to place in the launch position. Trajectories vary less than 1 cm because the ball does not spin when launched. The apparatus includes an assembled spring loaded gun, two balls of aluminium, an integral protractor and plumb line and comes complete with operating instructions. Weight: 1.74 kg. Dimensions (L x W x H): 400 x 100 x 180 mm.

This premium apparatus, from Frederiksen, allows accurate and reproducable free fall experiments to be carried out. The release mechanism at the top sends a start pulse to the timer when the ball is released, and a stop pulse is generated when the ball hits the contact plate at the bottom. • Connections via standard 4 mm safety connectors • No external power supply required so no risk of overheated coils • Four gold-plated steel balls and a ping-pong ball with metal thumb tacks included • Includes mirror to minimize parallax errors Requires separate timer (FO140110), stand and cables (not included).

This high quality timer, from Frederiksen, is particularly suitable for experiments such as 'g' by free fall and speed of sound, as well as other experiments where accurate timing is required. Inputs are via DIN 6 pole connectors (for Frederiksen photocells and microphones) or 4 mm safety sockets (for free fall experiments or other equipment). Compatible with the following equipment: • SO150400 microphone • TI170200 photogate • TI170100 speedgate • FO140105 freefall apparatus • Range: 0.03 ms to 27 hours • Resolution: 0.01 ms • digit LED display with floating decimal point • Manually controlled stopwatch option • Accepts start and stop signals from microphones, photocells or any on/off switch connected to the mm sockets • Power: 6 x AA batteries or mains adapter (included)

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 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 wooden block, which can be clamped to 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.

This fun and useful apparatus helps to demonstrate the 'Monkey and Hunter' experiment, to show how gravity affects projectile motion. The apparatus consists of a projectile 'gun' which fires a ping pong ball ('bullet') and model animal ('monkey') on an electromagnet release mechanism. The monkey is released at exactly the same time as the ball is fired, so should the gun be aimed directly at the monkey or just below it to allow for the distance it falls? Theory and practice will show that the gun should be aimed directly at the monkey, as both ball and monkey will fall at the same rate due to gravitational force.

Spare monkey for FO71860.

Spare solenoid and PCB for FO71860.

A solid metal sphere with small hook.

A solid metal sphere with small hook.

A solid metal sphere with small hook.

A solid metal sphere with small hook.

A solid metal sphere with small hook.

Apparatus to show the equality of acceleration under gravity between light and heavy objects in the absence of air resistance. Comprises a 100 cm acrylic tube with bungs at either end. A valve with a stopcock at one end allows a vacuum pump to be attached, and the air evacuated from the tube. Inside the tube is a coin, and a piece of paper (various laws prevent supply of a feather for this apparatus). When air is in the tube, the coin falls quickly but the paper is subject to air resistance and falls more slowly. With the air evacuated, the only force acting is gravity, so the two fall at equal rate, despite the difference in weight. The famous experiment on the Moon with hammer and feather can be seen here: http://timstar.co/HammerFeather

Self-contained apparatus for study of moments. Comprising high-quality aluminium stand, metre rule, three knife-edge sliders with hooks, two mass hangers, eight slotted masses 1-500 g, and storage rack. No additional apparatus such as retort stands required, and can be set up in 'moments'. Additional knife-edge sliders can be purchased if required. (FO180002)

Knife edge clamp for moment of force apparatus (FO180000). Ruler not included.

The balancing beam kit contains 5 sets of pre-drilled wooden beams with a central pivot and brass hooks to slot into the holes. The brass hooks are used to support slotted masses (not included) and the pivot is clamped into a retort boss head for support. Contents: 5 each of balance beams and pivots plus 10 brass hooks; enough for 5 groups or individual students.

This levers kit contains 5 sets of levers and accessories for students to investigate levers and moments. Each set includes a lever with precisely placed pre-drilled holes mounted on a plastic saddle, pivot rod and mounting base, along with 10 g mass carriers which slot into the lever holes. Each set requires a set of 10 g slotted masses (not included). Contents: 5 x lever kits.

The air track measures 1.2 metres and is made from high strength 56 x 56 mm extruded aluminium. Includes instruction manual and accessory kit which enables investigation of: • Velocity • Force and acceleration • Potential energy • Kinetic energy • Conservation of energy • SHM • Motion on level and inclined planes

Air track blower suitable for use with the compact linear air track FO150710. Please note this blower is not powerful enough for larger air tracks.

A precision machined, metre linear air track, of lightweight yet durable aluminium extrusion construction. The length is drilled with holes, such that when attached to blower, near-frictionless surface is created. The track rests on three adjustable feet, so it can be made perfectly horizontal with respect to gravity. The kit includes set of accessories for wide range of investigations: • 2 sliders • 10 bolt and wing nuts • 4 spring attachments • 4 spring/string attachments • 4 springs • 2 Velcro attachments • 2 pulleys, strings • 4 slotted masses hanger • 8 photogate flags • 2 photogate arms • 1 latching cradle/bumper • 4 masses for the sliders • Assembly instructions experiment guide Air blower FO180615 sold separately.

A blower specifically for the FO180610 air track.

A superb quality air track made from square section aluminium extrusion with supporting ""U"" channel. Linearity is +/- 0.03 mm. Suitable for elastic and inelastic collisions, momentum, speed and acceleration measurement. The track rests on three rubber feet, two of which can be adjusted. Each side has scale graduated in mm. The track is supplied with two carts and a standard accessory set. Additional accessories available on request. Dimensions (L): 2 metres. Standard Accessory Set contains: • Fork with plug connectors (3) • Holder with plate and plug connectors (3) • Holder with needle and plug connector (1) • Tube with wax and plug connector (1) • Holder with hook and plug connections (1) • 25 and 100 mm Apertures with plug connectors (1) • Weights 50 g for carts (4) • Pulley with connectors (1) and carts (2).

Standard Accessory Set contains: • Fork with plug connectors (3) • Holder with plate and plug connectors (3) • Holder with needle and plug connector (1) • Tube with wax and plug connector (1) • Holder with hook and plug connections (1) • 25 and 100 mm Apertures with plug connectors (1) • Weights 50g for carts (4) • Pulley with connectors (1) and carts (2).

Spare cart for the Frederiksen linear air track, TI68740.

Extremely quiet air blower with continuously adjustable speed for use with the premium air track TI68740. Complete with 1.7 metre hose. Mains supply: 220-240 V AC. Mass: 5.7 kg. Dimensions (L x W x H): 280 x 250 x 210 mm.

Economical but good quality slotted mass set made from coated steel alloy. Set comprises 1 x 100g mass hanger plus 9 x 100g masses. Tolerance ±5%.

Economical but good quality slotted masses made from coated steel alloy. Set comprises 5 x 100g masses. Tolerance ±5%. Hanger not included.

Economical but good quality mass hangers made from coated steel alloy. Set comprises 5 x 100g mass hangers.Tolerance ±5%. Masses not included.

Iron, with ring.

Iron, with ring.

Slotted. Circular with hole and slot % tolerance.

Slotted. Circular with hole and slot 1% tolerance.

Slotted. Circular with hole and slot 1% tolerance.