Lab Equipment for Teaching Physics

Features 

• Hall sensor and electronic timer

• Accurate angle and length measurements

• High measurement accuracy

  
  

Introduction 

The pendulum experiment is a cornerstone of general physics education, offering insights into fundamental concepts of motion and gravity. Traditionally, this experiment has been limited to small-angle approximations, often relying on manual stopwatch timing, which introduces significant measurement errors. To reduce inaccuracies, multiple-period measurements and averaging methods were used. However, air damping causes the swing angle to decay over time, further affecting accuracy.

The LEMI-16 Simple Pendulum with Electric Timer revolutionizes this classic experiment with a modern, precise approach. Featuring an integrated Hall sensor and electronic timer, this apparatus allows accurate measurement of the pendulum's period, even under large swing angles, using just a few oscillation cycles. This minimizes the effects of air damping and enables precise extrapolation to determine gravitational acceleration at a zero-degree angle.

With the LEMI-16 apparatus, users can conduct a wide range of experiments, including:

1. Measuring the swinging period at a fixed string length to calculate gravitational acceleration.

2. Measuring the swinging period with varying string lengths to determine gravitational acceleration.

3. Verifying the relationship between the pendulum period and the square of the string length.

4. Measuring the swinging period with varying initial swing angles to calculate gravitational acceleration.

5. Using extrapolation methods to achieve highly accurate gravitational acceleration measurements at extremely small swing angles.

6. Exploring the effects of non-linearity at large swing angles.

These experiments provide students with essential knowledge, helping them: understand the fundamental relationship between string length, initial angle, and gravitational acceleration; learn basic experimental methods and techniques, and explore non-linear dynamics and refine their understanding of classical mechanics.

The instruction manual is designed to support students, offering detailed experimental configurations and setups, clear explanations of theoretical principles, step-by-step procedural guides, and sample results for analysis and comparison.

Please click Experiment Theory and Contents to find more information about this apparatus. The LEMI-16 Simple Pendulum with Electric Timer is an indispensable tool for physics education, combining precision, ease of use, and versatility to enhance the learning experience in both classroom and laboratory settings.

Specifications