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TM 161 Rod and gravity pendulum



  • Investigation on the oscillation of pendulums1
  • Comparison of physical and mathematical pendulum


Technical Description

The model is used to investigate the oscillation of pendulums. During this process a physical pendulum is compared with a mathematical pendulum. The unit includes a metal bar with additional sliding weights as a rigid pendulum. The suspension point can be adjusted at the knife edge bearing of the pendulum. The length of the thread pendulum included can be easily varied using a clamping device.

The components of the experiment are attached to a base plate intended for wall mounting. The model is suitable for student experiments.

Learning Objectives / Experiments
- Period of thread and rod pendulums
- Determination of the centre of gravity on a rod pendulum



[1] Experiments on the oscillation of pendulums, comparison of physical and mathematical pendulums
[2] Rod pendulum (physical pendulum) made of metal, mounted on sliding knife edge bearing
[3] Thread pendulum (mathematical)
[4] Additional weight for rod pendulum, can be moved
[5] Base plate for wall mounting

Technical Data

Thread pendulum
- length: up to 2000mm
- nylon cord as thread
- mass: D=50mm, 0.52kg

Rod pendulum
 - length: 1000mm
- D=8mm
- mass: 0.39kg
- made of steel

Additional weight (steel ball)
- D=50mm
- mass: 0.49kg

Base plate
- wxh: 250x200mm

Dimensions and Weight
l x w x h : 250 x 80 x (2000) mm
Weight : approx. 5 kg

Scope of Delivery
1 base plate
1 thread pendulum
1 rod pendulum with additional weight
1 Allan key, AF 2.5
1 instruction manual

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