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Apparatus Inertia
Apparatus Inertia (Product Code: SLE/PHY/13) is a spring-flick demonstration set used to illustrate inertia, the tendency of a body at rest to stay at rest, in primary, middle and secondary school science classes. In this hands-on physics demonstration kit, a spring snaps a card out from under a glass ball, and the ball drops into the cup on the post instead of flying off with the card. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Purpose | Illustrating an effect of inertia |
| Contents | Glass ball, card, plastic base, post, hardware and instructions |
| Action | Pulling back and releasing the spring shoots the card forward while the ball drops back into the cup on the post |
| Glass ball | Has a 5 mm flat spot that lets it rest on the card |
| Extension | The same experiment can be tried with a coin |
| Product code | SLE/PHY/13 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Inertia Apparatus Used For?
It is the classroom version of pulling a tablecloth from under the dishes. The card is laid over the cup on the post, the glass ball rests on the card on its 5 mm flat spot, and the spring is pulled back. When the spring is let go it strikes the card sharply and sends it flying, but the ball, which was at rest, tends to stay at rest. The brief friction from the card moves it only a little, so it drops straight down and settles into the cup instead of travelling with the card.
Ask students to predict the outcome before each release, then repeat with a coin in place of the ball to show the same effect on a different object. A quick, confident release gives the cleanest result; a slow push drags the ball along and is itself a useful comparison. As a force motion experiment kit, it opens discussion of Newton's first law, seat belts and why loose objects slide in a braking bus.
OEM Manufacturer
ScienceLab is the brand name of Jain Scientific Equipments Private Limited, which is the OEM for the Apparatus Inertia. The set is manufactured at the company's own licensed factory in Saha, Ambala, Haryana, India, and supplied straight from there to schools, science centres, dealers and importers. Because the maker handles every enquiry, spare glass balls or cards and repeat class sets can simply be requested from us. Company details are on the ScienceLab profile.
Related Physics Lab Equipment
Teachers covering Newton's laws and momentum often pair this set with:
- Newton's Pendulum (Newton's Cradle) — carries the lesson on to momentum and energy transfer in collisions.
- Dynamics Trolley, Plastic — for experiments on force, mass and acceleration.
- Apparatus Collision 2 Dimension — a follow-on apparatus for studying collisions.
- Apparatus Falling Bodies (Projectile) — another quick mechanics demonstration built around a spring release.
The full list is under Physics Lab Equipment.
Frequently Asked Questions
What does the Apparatus Inertia demonstrate?
The Apparatus Inertia demonstrates that a body at rest tends to stay at rest. When the spring flicks the card away, the glass ball does not travel with it; it drops into the cup on the post, showing inertia and introducing Newton's first law of motion.
What is included in the Apparatus Inertia set?
The Apparatus Inertia set contains a glass ball, a card, a plastic base, a post, the fitting hardware and instructions. The spring used to flick the card forms part of the apparatus, and the glass ball has a 5 mm flat spot so it can rest steadily on the card.
Why does the inertia apparatus ball have a flat spot?
The glass ball of the Apparatus Inertia has a 5 mm flat spot so it can sit on the card without rolling off before the spring is released. The flat spot keeps each trial starting from rest, which makes the inertia effect repeatable for the whole class.
Can the inertia apparatus be used with other objects?
Yes. Besides the glass ball supplied with the Apparatus Inertia, the same experiment can be tried with a coin placed on the card. Comparing the two helps students see that inertia is a property of all objects, not only of the ball.
Who manufactures the Apparatus Inertia?
The Apparatus Inertia is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab) as the OEM, at its own factory in Saha, Ambala, Haryana, India. The company supplies it directly to schools, dealers and importers, and handles requests for replacement parts itself.
What information is needed for a quote on SLE/PHY/13?
For a quote on the Apparatus Inertia, code SLE/PHY/13, tell ScienceLab how many sets you need, the delivery location in India or abroad, and whether spare balls or cards should be included. Use the contact page or enquiry cart to send the request.
Request a Quote
Put the Apparatus Inertia in the enquiry cart or send quantities through the contact page. You will receive the quotation directly from ScienceLab as the manufacturer.
Last updated: 24 September 2026
