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KATER PENDULUM
A Stainless steel rod 1200mm long, 10mm dia, with one pair each of small and large brass and ebonite masses, two steel knife edges set in adjustable metal holders and a metal bracket with holes for wall mounting.
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ATWOOD MACHINE
This machine has brass pipe upright 240cms (8 ft.) long graduated incms. Metal fittings and arrangement for exact adjustment, vertical and horizontal. No dropping platform. Electric release weights start falling instantly circuit is broken. Wheel of aluminium 10cms. Diameter is carefully adjusted and balanced on steel agate bearing; platform with sliding weights and over weights.
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?G? BY FREE FALL APPARATUS
The free fall apparatus comprises two units, each of which is mounted on a plastic base, which can be clamped on a 13mm diameter retort rod. Connections are brought out to 4mm sockets.
The solenoid unit has a mumetal core, which ensures prompt release of the ball on de-energising. The gate switch unit comprises a hinged steel plate, which is held against an adjustable contact by means of a small permanent magnet, so that, by proper adjustment, the plates fall away promptly at the impact of the falling ball.
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GUINEA AND FEATHER APPARATUS
A hard glass tube 650mm length x 25mm dia unevacuated fitted with stopcock to screw into air pump plate, supplied with a small coin and a feather.
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LEVER SIMPLE FORM
For introducing the concept of equilibrium leading to an appreciation of the principle of the beam balance.
Consisting of a polished box wood rule 1m in length, divided in centimeters and millimeters on one edge, and inches and tenths on the other. Drilled every 2cm. Without riders.
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RIDERS ONLY
For the above lever, set of three. one acts as a fulcrum and the other two as weight hangers. Complete with pins.
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LEVER KIT
To provide a simple ‘See-Saw’ for experiments on balancing masses, leading to the principle of the lever. Also to show that there is no net change in energy in the moving masses.
Comprises 5 wood beams, approximately 610 x 44mm graduated at 38mm intervals, 4 “U” shaped supports, grooved to locate fulcrum pins, 40 brass ‘pennyweights’, 25 x 25 x 2mm and 20 fulcrum pins for insertion into edge of beam.
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INERTIA BALANCE
Comprises two metal trays. 130 x 55 x 23mm joined together by a pair of spring steel strips 10mm wide, the distance between the trays being 215mm. One tray is drilled to hold three equal cylindrical masses. The other tray acts as an anchorage and may be clamped to the bench either horizontally or vertically. Complete with three masses and a ?G? clamp for mounting.
Dimensions : 325 x 130 x 23mm overall.
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LINEAR AIR TRACK
Designed for the study of linear motion under conditions of low friction, is made from strong, square section aluminium. Two rows of fine holes run along the top of the track through which jets of air emerge to or an air cushion on which the vehicles float under virtually frictionless conditions.
The track is supported one five adjustable feet. An air inlet tube connection is fitted at one end and a butterfly valve at the other by means of which the air pressure inside the track may be adjusted. The track is supplied complete with the following accessories :
(a) Two heavy and one light vehicle, their masses in the ratio 2:1 with a tolerance of ± 2%.
(b) Two metal location plates drilled to take the inner feet of the track so that it can be firmly positioned on the bench using ‘G’ clamps, screw of self adhesive pads. The plates are fitted with pegs to support the shutter accessory pillars.
(c) Three moulded black ‘buffers’ and three ‘horns’.
(d) One set of pin and absorber (Plasticine) attachments for work on in elastic collisions.
(e) A supply of self-adhesive buffers for an alternative method with inelastic collisions.
(f) A set of Magnadur magnets (2) and counter balances (2) for work on collisions at a distance.
(g) Ten spare rubber bands.
(h) Three black cards to fit the vehicles for use in timing.
(i) 4 elastic chords with plastic ring on each end.
(l) Reel of nylon thread.
SPECIFICATION Track Square section aluminium 50x50mm, overall length 2m. Vechicles two of 230mm approx.x50x6mm, One of 215mm approx. x 50 x3mm.
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ELECTRIC BLOWER
For use with the Air track and Air Table. consisting of a 240V, industrial type vacuum cleaner(used with the hose connected to the outlet) which is capable of providing a high rate of airflow and a maximum pressure of 14kPa approximately. The blower is supplied complete with a wide bore air hose 1.7m long, hose adaptor and 2-core captive mains lead. The motor and other electrical parts are fully insulated.
Mains operated electronic linear reads 0 to 99.99sec. The display comprise 4 seven segment digits to read seconds and centi-seconds. Two pair of 4mm sockets with two pushbutton switches are controlled with switches which enable linear make or break pulses to be used to operate the timer. A reset is provided to the base.
Dimensions: Overall length without pulley 550mm approximately, width 150mm.
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PHOTOGATES
It is used as a light up erated timing gate. It consists of a photo detector and light source (2.5V, 0.2A) housed in two plastic cases held 40mm a part on a metal rod. 4mm sockets are provided for connecting it to the electronic timer, power 2V AC. Two sets are required with one linear air track. One to start timer other to stop the timer.
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FLECTCHER?S TROLLEY
An aluminium track, 1720 x 150mm wide with leveling screws. Aluminium pulley 50mm dia, clamp for vibrator and automatic pen release. Aluminium trolley 690 x 80 x 65mm, with three wheels mounted on ball bearings, five holes to accommodate cylindrical masses each approximately 350g Vibrator 600mm long with clamping marks at 5 and 8 Hz and pen holder with one each wood block 150 x 75 x 13mm, 150 x 75 x 23mm and 150 x 75 x 50mm. Without pen and paper.
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TURNTABLE/FLYWHEEL
The apparatus consist of a circular wooden top 300mm diameter and 12mm thick attached to a strong ball-bearing spindle provided with a driving pulley, 80mm diameter and a support rod for mounting in a large tripod base or boss head. Holes are drilled in the table and bolts are supplied for securing the various interchangeable accessories.
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INCLINED PLANE, simple
A plane board, 600x75mm, hinged to the base at one end and provided with a pulley for the force cord at the other. The inclination of the plane to be varied. Complete with brass roller 75 x 25mm diameter and scale pan. W/O Masses.
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INCLINED PLANE
For experiments on sliding friction. Comprises inclined wood plane, 600 x 100 x 20mm, with 22mm diameter pulley, hinged to wood base, 450 x 100 x 20mm. Linear scale fixed to edge of plane and vertical linear and 0 to 45? angular scales fixed to base with clamp, shaped for use as index with one each scale pan 75mm diameter, cord and hooks and roller 100 x 18mm.
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