Helical Spring
Product Code : JL-LEP-10350
The Helical Spring (SKU JL-LEP-10350) is a long galvanised spring-steel coil, 1.82–1.84 m unstretched, used to demonstrate transverse waves in physics lessons. This helical spring can be stretched to three times its length without deformation, so a class can watch wave pulses, reflections and standing waves travel along it. JaincoLab manufactures it in India for school and college physics laboratories.
Specifications
The helical spring is wound from galvanised spring-steel wire 1.25–1.43 mm thick into a coil of 20–22 mm outside diameter with 7 to 8 turns per centimetre, weighs 805–815 g and has a 20 mm circular hook at each end.
| Product | Helical Spring |
| SKU | JL-LEP-10350 |
| Purpose | Demonstrates transverse waves |
| Wire material | Galvanised spring steel wire |
| Unstretched length | 1.82 m to 1.84 m |
| Stretch capacity | Can be stretched to 3 times its length without deformation |
| Coil outside diameter | 20 mm to 22 mm |
| Wire diameter | 1.25 mm to 1.43 mm |
| Weight | 805 g to 815 g |
| Turns per centimetre | 7 to 8 |
| End fittings | Circular hooks on both ends, 20 mm hook diameter |
| Specification reference | As per DepEd guidelines |
Applications of the helical spring
Teachers use the helical spring to make wave motion visible: a sideways flick of one end sends a transverse pulse along the coil, and steady shaking with the far end held produces reflections and standing waves that students can observe and measure.
- Sending single transverse pulses along the stretched spring to show how a wave carries energy
- Showing reflection of a pulse at a fixed end held by a second student
- Setting up standing waves and identifying nodes and antinodes
- Relating frequency and wavelength by changing the rate at which one end is shaken
- Wave-motion demonstrations in secondary-school physics and general science classes
Scope of supply and ordering
The listing is for one galvanised steel helical spring with hooks at both ends, as described in the specification table.
Frequently asked questions
How long is the helical spring?
Its unstretched length is 1.82 m to 1.84 m, and it can be stretched to 3 times its length without deformation.
What is the spring made of?
It is made of galvanised spring-steel wire 1.25 mm to 1.43 mm in diameter.
What are the coil dimensions?
The coil has an outside diameter of 20 mm to 22 mm and 7 to 8 turns per centimetre.
How are the ends finished?
Both ends have circular hooks of 20 mm diameter.
Related products
Wave and sound apparatus often ordered with the helical spring:
Browse other wave and sound apparatus in the Laboratory Equipment Products range from JaincoLab, a physics lab equipment manufacturer in India.
Request a quote
To order the Helical Spring, send the quantity and delivery destination through the JaincoLab contact page or email [email protected]. Buying under a laboratory tender? Use our tenders page.
