Variable Force Apparatus Manufacturer,Supplier and Exporter in India
Product Code : EL-AMLE-8938
Jlab Export is a leading Variable Force Apparatus Manufacturer,and suppliers in India
Variable Force Apparatus (code EL-AMLE-8938) is a free-standing bench-top unit that determines the work done by a vertical effort that changes as it acts, and compares it with the work done in lifting a load. A suspension cord carries a loaded trolley at its mid-span, and ball-bearing pulleys, a set of weights and a 1 m ruler are supplied. Each unit is made by JLab in Ambala, India, with an instruction manual for student and lecturer.
Specifications
| Parameter | Detail |
|---|---|
| Arrangement | Suspension cord carrying a loaded trolley at mid-span; cord clamped at one end, effort applied vertically at the other |
| Pulleys | Ball bearing |
| Mounting | Free-standing, bench-top |
| Supplied with | Set of weights, 1 m ruler, instruction manual for student and lecturer |
| Dimensions (excluding weights) | 585 × 130 × 635 mm |
| Weight (excluding weights) | 3.2 kg |
| Quality check | Each apparatus is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 1 unit |
| Dispatch time | Usually 14–18 working days |
| Product code | EL-AMLE-8938 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
Why the Effort Varies
The cord is clamped at one end and the effort is applied vertically at the other. As the effort draws the cord tighter, the sag at mid-span shrinks and the trolley rises; the flatter the cord becomes, the greater the tension needed to hold the same load, so the effort grows through the stroke instead of staying constant.
Comparing the Two Works
Effort is recorded against the distance it moves, measured with the 1 m ruler, and the readings are plotted; the area under that curve is the work done by the variable effort. That figure is then set against the load multiplied by the height the trolley rose, and any gap between the two shows the losses in the system.
Other Work and Energy Apparatus
- Flywheel Apparatus — falling load and cord demonstrate energy storage in a steel flywheel.
- Wall Mounted Screw Jack — compares the efficiencies of square and V form screws.
The rig is grouped with our Applied Mechanics Lab Equipments, part of Mechanical Engineering Lab Equipment.
Request a Quote
Add the apparatus with Add To Cart or write via the contact page, giving the number of units and the delivery address for your quotation.
Last updated: 30 October 2026
