Bob/Metallic Sphere (Small) With Hooks Manufacturer,Supplier and Exporter in India

Bob/Metallic Sphere (Small) With Hooks (Product Code: SCL205/02) is a small brass pendulum bob with a hook, used as the swinging mass in simple pendulum experiments in school and college physics labs. The 18 mm polished brass sphere hangs from a thread by its hook, so students can study time period, effective length and simple harmonic motion with a simple pendulum apparatus in India’s school labs. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.

Specifications

What Is the Pendulum Bob Used For?

In the classic practical, a thread is tied to the bob’s hook and clamped between the halves of a split cork held in a stand. Students measure the bob’s diameter with a vernier calliper, add the radius to the thread length to get the effective length, displace the bob through a small angle and time 20 oscillations with a stop clock. Repeating this for several lengths and plotting length against the square of the time period gives a straight line from which g can be found using g = 4π²L/T².

Used with a full pendulum set-up, the bob makes the physics of pendulum motion visible and hands-on, which is why it belongs in any SHM experiment kit in India. Keep the amplitude small, start counting as the bob passes its mean position, and shield the set-up from fans or draughts. The polished, anti-corrosive brass can simply be wiped clean and stored dry.

What to Specify When Ordering

• The number of bobs – one per pendulum set-up, plus spares for a practical examination.
• Whether stands, clamps, split corks or stop clocks should be quoted with the bobs.
• The delivery location for your laboratory or dealer stock.

OEM Manufacturer

Jain Scientific Equipments Private Limited, which trades as ScienceLab, is the OEM (original equipment manufacturer) of this brass pendulum bob. It is made at the company’s own licensed factory at Saha, Ambala, Haryana, India, rather than bought in from a trader, and is sent factory-direct to schools, colleges, laboratories, dealers and importers. Repeat orders and replacement bobs are handled by the manufacturer itself – just ask us. Read more on our company profile.

Related Physics Lab Equipment

Apparatus that completes a simple pendulum set-up:

• Vernier Calliper — measures the bob’s diameter to work out the effective length.
• Stop Clock — times a set number of oscillations.
• Split Cork — grips the thread firmly at the point of suspension.
• Vertical Stand With 3 Clamps — holds the split cork and pendulum above the bench.
• Meter Scale 100 cm — measures the thread length for each reading.

Browse the full Physics Lab category.

Frequently Asked Questions

What is the Bob/Metallic Sphere (Small) With Hooks made of?
The Bob/Metallic Sphere (Small) With Hooks is made of brass and finely polished. The brass is listed as anti-corrosive with a long-lasting shine, so the bob keeps its finish through repeated use in student practicals.

What size is the pendulum bob?
The Bob/Metallic Sphere (Small) With Hooks has a diameter of 18 mm. Students should still measure it with a vernier calliper during the experiment, because half the measured diameter is added to the thread length to give the effective length.

Which experiments is the bob used for?
The Bob/Metallic Sphere (Small) With Hooks is used in the simple pendulum experiment: studying how time period depends on length, demonstrating simple harmonic motion, and determining the acceleration due to gravity from a length against time-period-squared graph.

Who manufactures the Bob/Metallic Sphere (Small) With Hooks?
Jain Scientific Equipments Pvt Ltd (ScienceLab) manufactures the Bob/Metallic Sphere (Small) With Hooks as the OEM at its own factory in Saha, Ambala, Haryana, India, and supplies it directly to schools, colleges, dealers and importers.

How should the brass bob be looked after?
Wipe the Bob/Metallic Sphere (Small) With Hooks with a dry cloth after use and store it in a dry box. Avoid dropping it on hard floors, since a dented sphere or bent hook can change how it hangs and swings.

How can I get a quotation for the pendulum bob?
Send product code SCL205/02, the quantity of Bob/Metallic Sphere (Small) With Hooks you need and your delivery location through our contact page. The quotation comes directly from the manufacturer, for single labs or bulk and export orders.

Request a Quote

Quotations for the Bob/Metallic Sphere (Small) With Hooks come direct from the manufacturer. Send your requirement through our contact page, or add it to the enquiry cart together with the stand, split cork and stop clock for a complete pendulum set-up.

Last updated: 24 September 2026