Newton's Cradle
Product Code : SCL-PL-11802
Newton's Cradle (SKU SCL-PL-11802) is a row of five steel balls suspended from a frame: lift and release the end ball, and the impact passes through the row to swing out the ball at the far end. It can be used to illustrate action and reaction, momentum and elastic collisions in school and junior-college physics. Science Lab Supplies manufactures the cradle in its Saha, Ambala works at Plot 448, HSIIDC Industrial Area, India, and prices it directly for schools, colleges, tender contractors and distributors.
Specifications
Balls, frame and the principle shown by this five-ball cradle are set out row by row below. In short, five steel balls of 19 mm diameter hang in a line from a chrome-plated steel frame, so a collision at one end is passed along the row and the equal and opposite reaction of Newton's third law is easy to see.
| Specification | Value |
|---|---|
| SKU | SCL-PL-11802 |
| Balls | 5 |
| Ball material | Steel |
| Ball diameter | 19 mm |
| Suspension | Balls hang in a row from the frame |
| Frame | Chrome-plated steel |
| Demonstrates | For every action there is an equal but opposite reaction |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Newton's Cradle
The cradle demonstrates that every action has an equal and opposite reaction and that momentum is carried through a chain of colliding bodies. It fits the laws-of-motion chapters of NCERT Class 9 and Class 11 and is a simple, visual piece of school physics lab equipment in India for lessons and exhibitions.
- NCERT Class 9 science (Force and Laws of Motion): third law and conservation of momentum.
- NCERT Class 11 physics (Laws of Motion): impulse and momentum transfer, extended to cart collisions with the spring and magnetic bumpers of the Dynamics Car and Inclined Track Set.
- Class 11 Work, Energy and Power: introducing elastic collisions and the energy of a swinging ball, alongside the 1 m cord and 90°–0°–90° scale of the Pendulum Set.
- Prediction exercises: releasing one, two or three balls and asking students how many will swing out.
Standard Scope of Supply
The Newton's Cradle is supplied as a single unit: the chrome-plated steel frame with its five 19 mm steel balls hanging from it, ready for demonstration on a level table. Any other laws-of-motion apparatus you request is listed as a separate line on the quotation.
Packing, MOQ and Lead Time
Order one cradle for a demonstration table or several for group work; the quotation you receive sets out packing, delivery time and price for exactly that quantity. Other laws-of-motion apparatus can be listed alongside it on one quotation.
Science Lab Supplies holds an Importer-Exporter Code and can ship to buyers in Nepal, Bangladesh, Zambia, Rwanda, South Africa and Qatar. Tell us how many cradles you want and where they should go, using the contact page or the enquiry cart; schools buying through a bid can turn to the lab tender page.
Frequently Asked Questions
What does a Newton's Cradle show?
It shows Newton's third law and the transfer of momentum: when an end ball strikes the row, the ball at the far end swings out while the middle balls stay almost still.
How many balls does this cradle have?
It has five steel balls, each 19 mm in diameter, hung in a line from a chrome-plated steel frame so that they just touch at rest.
Is Science Lab Supplies the manufacturer or a trader?
Cradles of this design are built at the Science Lab Supplies works in Saha, Ambala, India; as their manufacturer, the company quotes prices and delivery terms itself, not through a reseller.
Can several cradles be quoted for a school tender?
Yes. Send the quantity, delivery address and your tender specification, and an item-wise quotation will be prepared on the basis of the details shown here.
Related Laws of Motion Apparatus
Newton's Cradle introduces momentum and reaction in a memorable way. These Physics Lab items take the same laws-of-motion lessons further with falling bodies, carts on tracks, puck collisions on an air table and energy on a loop track, and any of them can go on the same quotation as the cradle.
- Apparatus for Demonstrating the Free Fall of Bodies — 20–30 mm steel or plastic spheres on a frame over a 17 x 6 cm wooden block.
- Apparatus for the Study of the Dependence of the Acceleration of the Body on Force When the Mass Remains at C. — two carts on rectilinear and curved tracks for the second law.
- Kitty for the Study of the Motion of Bodies — two carts with ten springs and ten elastic cords.
- Wooden Dynamics Trolley — pair of identical trolleys on three low-friction wheels with spring plungers.
- Air-Cushion Table — 935 x 750 mm table with two 100 mm inkjet pucks.
- Loop-The-Loop Apparatus — 7.5 in loop with a rubber ball and a steel ball for mechanical energy.
- Pair of Metal Balls — two bright steel spheres of 2 cm diameter.
Browse the full Physics Lab range, the Applied Mechanics range, or all physics lab equipment.
Last updated: 22 October 2026
