Product Information
Physics • Mechanics • Equilibrium Disc to Demonstrate Equilibrium (Balance)
Demonstrate rotational equilibrium and the principle of moments with a circular physics laboratory apparatus. The 200 mm plastic disc features a rotation axis and 18 radially and symmetrically distributed attachment points, specified as 2 mm holes or the same number of nails.
200 mmDisc diameter18Attachment points2 mmSpecified hole diameterWhat Is a Disc to Demonstrate Equilibrium?
A disc to demonstrate equilibrium is an educational mechanics apparatus used to explain how forces acting at different positions can balance the turning effect around a rotation axis. By applying loads at selected points, students can observe how the position and force of each load affect the rotational state of the disc.
This equilibrium balance disc is suitable for teaching the principle of moments, torque and the conditions for rotational equilibrium in school and college physics practicals.
Quick answer: The apparatus helps demonstrate rotational equilibrium when the total clockwise moment balances the total anticlockwise moment about the rotation axis, assuming other effects such as friction are negligible.Product Design and Attachment Layout
Product overviewRadial and Symmetrical Layout
The attachment points are distributed radially and symmetrically across the disc surface. Loads can be positioned at selected points to investigate how the moment arm affects rotational balance.
- Plastic disc construction
- 200 mm diameter
- Rotation axis
- 18 holes of 2 mm diameter or 18 nails, as specified
Note: The illustration is a conceptual layout, not a photograph or a manufacturing drawing.
How Does the Equilibrium Disc Demonstrate the Principle of Moments?
A force applied at a distance from a pivot can produce a turning effect called a moment or torque. Its magnitude depends on the force and the perpendicular distance between the pivot and the force's line of action.
Visual Concept: Rotational Equilibrium
Illustrative comparison only: at equilibrium, clockwise and anticlockwise moments are equal in magnitude when the net moment is zero.
Clockwise moment Turning effect in one directionAnticlockwise moment Equal opposing turning effectTotal clockwise moments = Total anticlockwise momentsThe equal bars illustrate the equilibrium condition; they do not represent measured product data or a test result.
Technical Specifications
Product Name Disc to Demonstrate Equilibrium (Balance) Application Physics and mechanics demonstrations Material Plastic disc Disc Diameter 200 mm Rotation Axis Specified Attachment Points 18 holes or the same number of nails Hole Diameter 2 mm Distribution Radially and symmetrically distributed over the disc surface Mounting Stand and Weights Confirm included accessories with PSAW Laboratory Equipments Experiments and Educational Applications
Experiment 01Principle of Moments
Investigate how opposing turning effects balance around a fixed axis.
Experiment 02Rotational Equilibrium
Observe the condition under which a body has no net turning effect.
Experiment 03Force and Distance
Compare how a load's position relative to the axis affects its moment.
Experiment 04Physics Demonstrations
Use the apparatus to support teacher-led mechanics demonstrations and student practicals.
How to Perform an Equilibrium Disc Experiment
- Secure the rotation axis using a suitable support arrangement.
- Check that the disc can rotate freely before applying any loads.
- Apply suitable known forces or suspended loads at selected attachment points using an appropriate setup.
- Observe the direction in which each force tends to turn the disc.
- Measure the perpendicular distance from the axis to each force's line of action.
- Calculate each moment using moment = force × perpendicular distance.
- Adjust the loads or their positions until the opposing moments balance, then compare the results.
Safety and setup: Use an appropriate support, suitable loads and secure attachments. The disc's supplied accessories and maximum permissible load should be confirmed before performing the experiment.10 Laboratory Equipment Brands and Suppliers to Know
Buyers searching for physics laboratory apparatus in India may compare suppliers based on product range, specifications, availability, service and suitability for their institution. The following is a discovery list, not an independently verified ranking of the ten best brands for this specific disc.
Your brand1. PSAW Laboratory Equipments
PSAW offers educational laboratory equipment through its product catalogue. Contact the team to confirm the equilibrium disc's availability and supplied configuration.
2. ScienceLab
An educational and scientific apparatus brand with a listed range of school physics equipment and mechanics demonstration products.
3. ESAW
A laboratory equipment supplier with educational physics and mechanics products, including moment-of-force demonstration apparatus.
4. COSMO Laboratory Equipment
Supplies scientific and educational instruments, with product categories covering physics measurement and other laboratory equipment.
5. JaincoLab
Offers measuring instruments and laboratory apparatus for school, college, university and scientific practical applications.
6. Viscilabs
Lists a broad physics equipment range, including measurement, balances, mechanics and educational laboratory products.
7. Scientico India
Offers specialised engineering and laboratory apparatus, including products for forces, moments and equilibrium experiments.
8. LabTek
Supplies laboratory and engineering teaching apparatus, including static and dynamic balancing equipment.
9. AK Labs
Lists educational science products and demonstration models designed for classroom learning and laboratory use.
10. PolyLab India
Lists educational and laboratory products, including apparatus related to moments and mechanical equilibrium.
Brand descriptions are brief catalogue-oriented summaries. Inclusion does not imply an independent quality ranking, endorsement, or confirmation that every brand sells this exact product model. Verify current product availability directly.
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Frequently Asked Questions
What is a disc to demonstrate equilibrium used for?
It is used to demonstrate rotational equilibrium, torque and the principle of moments by applying forces at different positions around a rotation axis.
What is the diameter of the equilibrium disc?
The specified plastic disc has a diameter of 200 mm.
How many holes does the balance disc have?
The supplied specification describes 18 holes of 2 mm diameter, or the same number of nails, distributed radially and symmetrically across the disc surface.
What is the principle of moments?
The principle of moments states that when a body is in rotational equilibrium, the total clockwise moment about an axis equals the total anticlockwise moment, assuming the net moment is zero.
How is the moment of a force calculated?
The magnitude of a moment is calculated by multiplying the force by the perpendicular distance from the pivot to the force's line of action.
Are weights and a support stand included?
The provided product specifications do not confirm whether weights or a support stand are included. Contact PSAW Laboratory Equipments to confirm the supplied configuration.
Where can I enquire about this equilibrium apparatus?
Contact PSAW Laboratory Equipments through the website contact page or WhatsApp link below to request current specifications, availability and pricing.
Why Choose PSAW Laboratory Equipments?
PSAW Laboratory Equipments provides a catalogue of educational laboratory apparatus for schools, colleges and other learning institutions. For this equilibrium demonstration disc, buyers can enquire about the available configuration, technical details and quantity requirements before ordering.
Enquire About Disc to Demonstrate Equilibrium
Looking for an equilibrium disc for physics practicals, mechanics demonstrations or educational laboratory use? Contact PSAW Laboratory Equipments to confirm product details and pricing.
Enquire on WhatsApp Contact PSAWPhone: 9416981180
Email: psawsales@gmail.com
Disc to Demonstrate Equilibrium (Balance)
Material : Plastic disc
Diameter of 200 mm
Rotation axis with 18 holes of 2 mm diameter or the same number of nails
Radially and symmetrically distributed on the surface of the disc