Rotational Moment of Inertia Apparatus Manufacturer,Supplier and Exporter in India

Rotational Moment of Inertia Apparatus (Product Code: SLE/MCE/30) is a three-string pendulum set-up used to determine the moment of inertia of a rigid body in engineering and physics laboratories. A hanging plate is twisted into torsional oscillation, and a photoelectric sensor with a time counting device measures the oscillation period, so students obtain the period electronically rather than by eye. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.

Key Details

What Is the Rotational Moment of Inertia Apparatus Used For?

Moment of inertia is the rotational counterpart of mass: it describes how strongly a body resists a change in its rotation, and it depends on how that mass is distributed about the axis. Here the plate hangs from three strings, a small twist sets it oscillating about its vertical axis, and the period of that torsional oscillation is linked to the moment of inertia of whatever the plate carries. Timing the empty plate first and then the plate with a test body lets students separate the body's own moment of inertia.

Moving the same body away from the centre of the plate shows how the axis position changes the result, a direct check of the parallel axis theorem in engineering mechanics classes. For consistent readings, keep the twist small, start the plate without sideways swing, and repeat each timing a few times before averaging. As a moment of inertia kit for Indian colleges and polytechnics, it pairs well with a balance and a vernier caliper, because the calculation needs the masses and dimensions involved.

OEM Manufacturer

The Rotational Moment of Inertia Apparatus comes from ScienceLab as the original equipment manufacturer. Jain Scientific Equipments Private Limited, trading as ScienceLab, builds it at its own licensed factory in Saha, Ambala, Haryana, so engineering colleges, universities, distributors and importers buy direct from the maker rather than from a stockist.

The company is a registered MSME with manufacturing as its major activity (Udyam UDYAM-HR-01-0003714), and export consignments are shipped under Importer-Exporter Code AAECJ8618A issued by DGFT. See the ScienceLab company profile for more background.

Related Theory of Machines Equipment

Working out a moment of inertia also needs masses and dimensions, and the topic links to other rotational and torsional experiments:

• Physical Balance (Digital) — weighs the plate and test bodies used in the calculation.
• Caliper Vernier (Metal) — measures plate radius and body dimensions for the theoretical value.
• Stopwatch, Digital — a manual cross-check of the electronic period reading.
• Vibration Of Spiral Spring Apparatus — another torsional oscillation experiment, using a spiral spring instead of strings.

More rotating-mass and mechanism apparatus is listed in the Theory of Machines category.

Frequently Asked Questions

What method does the Rotational Moment of Inertia Apparatus use?
The Rotational Moment of Inertia Apparatus uses the three-string pendulum method. A plate hung on three strings oscillates about its vertical axis, and the moment of inertia of a rigid body placed on it is calculated from the measured torsional oscillation period.

How does the Rotational Moment of Inertia Apparatus measure the period?
The Rotational Moment of Inertia Apparatus measures the torsional oscillation period with a photoelectric sensor combined with a time counting device. Electronic timing avoids relying on a student's reaction speed with a hand stopwatch, which makes repeated readings more consistent.

Which test bodies come with the Rotational Moment of Inertia Apparatus?
The product listing for the Rotational Moment of Inertia Apparatus does not specify the test bodies or accessories supplied. Please ask through our contact page so that the quotation states exactly which bodies and parts are included.

What can students learn from the Rotational Moment of Inertia Apparatus?
With the Rotational Moment of Inertia Apparatus, students learn the physical meaning of moment of inertia, the three-string pendulum measurement method, and how the mass distribution and axis position of a rigid body change its moment of inertia.

Who manufactures the Rotational Moment of Inertia Apparatus?
Jain Scientific Equipments Pvt Ltd (ScienceLab) manufactures the Rotational Moment of Inertia Apparatus as the OEM at its own licensed factory in Saha, Ambala, Haryana, India. Quotations and spares queries are answered directly by the company that makes it.

Is a calibration certificate available for the Rotational Moment of Inertia Apparatus?
Calibration documents for the Rotational Moment of Inertia Apparatus timing system are not stated in the product listing. If your institution needs a calibration certificate, mention it when you request a quote so that availability can be discussed with us before ordering.

Can the Rotational Moment of Inertia Apparatus be ordered in bulk or for export?
Yes, the Rotational Moment of Inertia Apparatus can be quoted for a single laboratory or for multiple units, for buyers in India and international markets. State the quantity and destination in your enquiry so the quotation matches your order.

Request a Quote

Send your requirement for the Rotational Moment of Inertia Apparatus (SLE/MCE/30) through the contact page, or place it in the enquiry cart together with any other laboratory items. Quotes are issued directly by the manufacturer in Ambala.

Last updated: 24 September 2026