Quick Answer:The Distance Pendulum Apparatus is a pendulum on a metal support frame with an adjustable length and scale, used to study simple harmonic motion and show that the time period depends on length but not on the mass of the bob.
Last updated: 18 October 2026
Key Features
Pendulum length can be adjusted and read on a scale.
Metal stand and support frame.
Shows the relation between length and time period.
Demonstrates that the period does not depend on the mass of the bob.
Technical Specifications
Specification
Value
Components
Pendulum, adjustable length scale, support frame
Construction
Metal stand, string, adjustable pendulum bob
Level
Secondary to higher secondary
How It Is Used
Set the pendulum on a stable base, adjust the length, pull the bob aside slightly and release it. Students time the oscillations, change the length and repeat to compare results. Keeping the displacement small keeps the motion close to ideal simple harmonic motion.
Frequently Asked Questions
What affects the time period on the Distance Pendulum Apparatus?
The length of the pendulum. The apparatus shows that the period depends on length but not on the mass of the bob, provided the swing is kept small.
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