Quick Answer:The Hooke’s Law Apparatus demonstrates that the extension of a spring is proportional to the load, with a coiled spring, mass hanger and indicator on a 300 mm rod and a 150 mm adjustable mirror scale in millimetres. A 250 g slotted weight set is included.
Last updated: 18 October 2026
Key Features
150 mm adjustable mirror scale, marked in millimetres, to prevent parallax error.
Coiled spring hung from a hook on a sturdy 300 mm rod.
Mass hanger with indicator.
Supplied with a 250 g slotted weight set.
Mounted on a wooden base.
Technical Specifications
Specification
Value
Scale
150 mm adjustable mirror scale, mm divisions
Rod
300 mm
Spring
Coiled, with mass hanger and indicator
Weights
250 g slotted weight set
Base
Wooden
How It Is Used
Slotted weights are added to the hanger one at a time and the indicator position is read against the mirror scale, lining it up with its reflection to avoid parallax. Plotting extension against load shows the straight-line relationship of Hooke's law.
Frequently Asked Questions
Are weights included with the Hooke’s Law Apparatus?
Yes. It is supplied complete with a 250 g slotted weight set.
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