Assorted Metal Bob Collection

Product Code : SCL-AM-11236

The Assorted Metal Bob Collection is a set of six solid spherical bobs used for pendulum, density and material-comparison experiments. Designed for physics laboratories, schools, colleges and STEM classrooms, the collection contains one bob each in brass, aluminium, copper, zinc, iron and lead, with a small hook for suspension.

Product Description

Each bob is formed from a different metal and turned into a spherical shape. The suspension hook allows the selected bob to be attached to a suitable thread or cord for pendulum investigations. Standard diameter options are 12 mm, 18 mm and 25 mm.

The collection helps students compare how material type affects mass and density while maintaining a similar general shape. It complements other properties of matter laboratory equipment used for practical work involving density, specific gravity, oscillation and measurement.

Key Features

• Six-metal collection: Includes brass, aluminium, copper, zinc, iron and lead bobs.
• Three diameter options: Available in 12 mm, 18 mm or 25 mm sizes.
• Solid turned construction: Each bob is manufactured as a solid spherical metal component.
• Suspension hook: A small hook allows attachment to pendulum thread or laboratory supports.
• Comparative learning: Enables students to compare masses and material properties across different metals.
• Reusable apparatus: Suitable for repeated supervised physics experiments and demonstrations.
• Custom supply: Alternative sizes, materials, non-metal bobs and individual pieces are available on request.

Technical Specifications

What’s Included in the Kit

• One brass spherical bob with hook
• One aluminium spherical bob with hook
• One copper spherical bob with hook
• One zinc spherical bob with hook
• One iron spherical bob with hook
• One lead spherical bob with hook

Pendulum thread, stand, clamp, measuring instruments and storage case are not confirmed as standard components.

Applications / Uses

• Comparing the masses of different metals
• Investigating density and material properties
• Studying simple pendulum motion with interchangeable bobs
• Observing whether pendulum period changes with bob material or mass
• Supporting specific-gravity and displacement demonstrations
• Comparing spherical samples with metal cylinders for density experiments
• Extending material studies with assorted metal cubes

How to Use the Assorted Metal Bob Collection

1. Select the required metal bob and inspect its hook before use.
2. Attach a light, secure thread to the suspension hook.
3. Fix the other end of the thread to a stable pendulum support.
4. Measure the effective pendulum length to the centre of the bob.
5. Displace the bob through a small angle and release it without pushing.
6. Record the time for several oscillations and calculate the average period.
7. Repeat with other bobs while keeping the thread length and release angle constant.

Safety note: The set includes a lead bob. Use it only under trained adult supervision. Wear suitable gloves, avoid scratching or abrading its surface, keep it away from food, and wash hands after handling.

Care & Maintenance

• Wipe the bobs with a dry, soft cloth after use.
• Store each metal separately in a labelled, closed container.
• Protect the suspension hooks from bending and impact.
• Remove any damaged or corroded bob from student use.

Why Choose Lab Equipments Ambala

Lab Equipments Ambala manufactures and exports scientific and educational laboratory equipment from Ambala, India. Its physics range includes pendulum equipment, mechanics apparatus and material-property samples for schools, colleges and technical institutes. Custom bob sizes and materials can be supplied for defined institutional requirements. Buyers should confirm the selected diameter, individual masses, finish, packing and lead-handling requirements before ordering.

Frequently Asked Questions

What metals are included in the Assorted Metal Bob Collection?

The set contains one bob each in brass, aluminium, copper, zinc, iron and lead.

How many bobs are supplied?

Six solid spherical metal bobs are supplied in one standard collection.

What sizes are available?

The verified diameter options are 12 mm, 18 mm and 25 mm. The selected size should be stated when ordering.

Can the bobs be used in simple pendulum experiments?

Yes. Each bob has a small suspension hook for attachment to a suitable thread.

Are all six bobs the same mass?

No equal-mass claim is published. Because the bobs are made from different metals, their masses should be measured and recorded for the selected size.

Can custom materials or sizes be ordered?

Yes. Custom sizes and materials, including wood and plastic options, are available. Individual bobs can also be requested.

Request the required diameter and packing details for the Assorted Metal Bob Collection, then browse the complete physics laboratory equipment range for compatible pendulum and measurement apparatus.