Bending of Beam Apparatus
Product Code : EL-AM-10321
Quick answer: The Bending of Beam Apparatus consists of a stand with a knife-edge top, a metal bar 100 cm long, 25 mm wide and 4.5 mm thick, a sliding knife edge with hanger, and a spherometer with electric contacts on a cast iron stand. It is used to measure the depression of a loaded beam and find Young's modulus of the bar. Lab Exports manufactures it in Delhi for colleges, universities and schools.
Specifications
| Component | Specification |
|---|---|
| Metal bar | 100 cm long, 25 mm wide, 4.5 mm thick |
| Stand | Knife-edge top |
| Loading | Sharp knife edge with hanger, moves along the bar |
| Spherometer | On a specially designed cast iron stand, with electric contacts |
| Weights | Available with or without weights |
How the bending of beam experiment is done
When a beam resting on two knife edges a distance L apart is loaded at its centre with a mass M, it sags by a small depression delta. For a rectangular bar of breadth b and thickness d, delta = M g L^3 / (4 Y b d^3), so Young's modulus is Y = M g L^3 / (4 b d^3 delta). The thickness enters as its cube, so d is measured carefully with a screw gauge.
- Place the bar on the knife-edge supports and set the sliding knife edge with its hanger at the centre of the span.
- Lower the spherometer screw until it just touches the bar; the electric contact signals the exact moment of touch.
- Add masses to the hanger in equal steps, raise the screw, and bring it down to contact again for each load.
- Record the spherometer readings on loading and unloading, and find the mean depression for each mass.
- Plot depression against load and use the slope with L, b and d to calculate Y.
Key features
- Metal bar 100 cm long, 25 mm wide and 4.5 mm thick
- Stand with knife-edge top to support the bar
- Sharp knife edge with hanger slides along the bar to set the load position
- Spherometer with electric contacts gives a clear signal at the point of touch
- Spherometer fitted on a specially designed cast iron stand
- Available with or without weights
Documentation and supply
Installation instructions and a manual are supplied with the apparatus. Most Lab Exports products carry a one-year manufacturer warranty.
Lab Exports manufactures the Bending of Beam Apparatus at its works in Laxmi Nagar, Delhi, and supplies it to colleges, universities and schools in India and 60+ countries, handling the export documents for each shipment. More about the company is on the About Lab Exports page.
Related Applied Mechanics products
- Torsion (Barton's) Apparatus Vertical Pattern (EL-AM-10320)
- Bending of Beam Apparatus, Koenig's Method (EL-AM-10322)
- Torsion Apparatus Searle's Type (EL-AM-10319)
- Cantilever Apparatus (EL-AM-10323)
- Torsion Pendulum (Bridge Type) (EL-AM-10318)
- Kater's Reversible Pendulum (EL-AM-10324)
The full range is in the Applied Mechanics section of the Physics Lab range.
Frequently asked questions
What are the dimensions of the bar in the bending of beam apparatus?
The metal bar is 100 cm long, 25 mm wide and 4.5 mm thick.
How is the depression of the beam measured?
With a spherometer on a cast iron stand; its electric contacts show exactly when the screw touches the bar.
Are weights supplied with the bending of beam apparatus?
The apparatus is available either with or without weights.
What is the price of the Bending of Beam Apparatus?
Prices are not published on the website. Add the Bending of Beam Apparatus to the Enquiry Cart with the Add To Cart button on this page, or email [email protected] with the house code EL-AM-10321 and the quantity, to receive a quotation.
Does Lab Exports manufacture the Bending of Beam Apparatus?
Yes. Lab Exports manufactures the Bending of Beam Apparatus at its works at 11/315, Lalita Park, Laxmi Nagar, Delhi 110092, under house code EL-AM-10321.
Request a quote
Email [email protected] with the house code EL-AM-10321 and the quantity, or add the Bending of Beam Apparatus to the Enquiry Cart with the Add To Cart button on this page. Tender buyers can also see the Tenders and OEM page.
