Mechanics
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Mechanics
Ticker Tape Timer
For measuring velocity and acceleration. A vibrating striker prints dots on the tape using carbon disc. The unit is housed in a sturdy plastic case, works on 6-9 V DC, producing 25 or 40 dots per second. With 38mm carbon discs (12) and tape roll small 15mm x 30 mtr.
PH10540 -
Mechanics
Ticker Tape Timer
To provide dots on tape at 1/50 or 1/60 second intervals, equal to the frequency of the mains supply. Operates on 12 V ac. It has an electromagnet and a spring-loaded armature which vibrates above a support table. Paper tape drawn through guides on the table is struck by a dotting screw, carried on the armature. A peg on the table is provided to allow full use of carbon paper disc. Fitted on base with 66mm carbon discs (12) and tape roll small 15mm x 30 mtr.
PH10545 -
Mechanics
Battery Powered Acceleration Timer
This battery-powered timer produces 30 to 50 marks per second for dynamic experiments. 1.5V motor operates on two D-cell batteries (not included). Wooden base improves stability, reduces vibration and permits attachment to a ring stand post. Striker mechanism acts against an aluminum plate to produce improved-dot definition on the ticker tape.
43mm disc carbon (12) and small tape roll 15mm width x 30mtr.
PH10548 -
Mechanics
Double Cone And Incline
A fascinating demonstration of center-of-gravity principles. When placed on the diverging bars of the inclined plane, the cone appears to roll up the plane. Upon careful examination, students determine that the axis of the cone is actually moving down the slope of the bars.
PH10554 -
Mechanics
“G” By Free Fall
The apparatus consists of an electromagnet housed in a plastic case with connections provided for an external timer. It also contains a platform unit containing a switch and terminals for the external timer. The unit is supplied with a heavy steel sphere. With the upper and lower unit connected to the external timer, the sphere is released by moving the switch on the electromagnet to the upward position. This action simultaneously starts the timer. As the sphere hits the cork mat on the platform unit, it activates a switch to turn off the timer.
PH10556 -
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Mechanics
“G” By Free Fall
The apparatus consists of an electromagnet housed in a plastic case with connections provided for an external timer. It also contains a platform unit containing a switch and terminals for the external timer. The unit is supplied with a heavy steel sphere. With the upper and lower unit connected to the external timer, the sphere is released by moving the switch on the electromagnet to the upward position. This action simultaneously starts the timer. As the sphere hits the cork mat on the platform unit, it activates a switch to turn off the timer.
PH10556B -
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Mechanics
Apparatus to study the eccentricity of center of gravity
In architectural design, it is recommended that spaces for unusually heavy weights be in basements or in buildings isolated from the main structure. Ductile parallel pipes with a central plumb line, which enable to demonstrate that the center of gravity of solid passes through its support polygon. It is made by positioning the stiff elements asymmetrically with respect to the center of gravity of the story.
PH10559 -
Mechanics
Maxwell’s Wheel
Useful for demonstrating momentum, conservation of energy and torque. A large flywheel suspended by two strong cords. The cords are wound around the shaft of the wheel and then released. The wheel will unwind as it falls but will wind itself back up as the momentum carries the wheel upward in the opposite direction. This oscillation process will continue for several moments gradually coming to a stop as the wheel slowly loses momentum and travels less each time. Include instructions.
PH10562 -
Mechanics
Variable Inertia Bar
This apparatus helps to demonstrate that the torque required to accelerate a flywheel depends upon its moment of inertia rather than its mass. A steel bar 790 x 12 mm is mounted at its centre on a sleeved spindle. The spindle is extended through a sleeve so that the bar may be rotated by a weight and string. Heavy adjustable masses are mounted on each end of the bar and maybe clamped at any desired position, enabling inertia to be varied.
PH10565B -
Mechanics
Pendulum on Stand
Everything You Need to Demonstrate the Properties of Simple Pendulums By suspending several pendulums parallel to one another, you can dramatize the effects of such variables as mass and length on pendulum behavior. This versatile unit consists of a heavy steel base supporting an aluminum rod, with meter stick attached to an adjustable slide which can act as both an index and a stop in addition to a triple pendulum clamp. Also includes instructions and three balls — two 25mm drilled metal balls and one 25mm drilled wooden ball.
PH10566B