Pohl's Pendulum Forced Oscillation for Mechanics Physics Lab

This Pohl's Pendulum Forced Oscillation for Mechanics Physics Lab is designed for studying forced oscillations, resonance phenomena, and damping effects in dynamic systems. The apparatus combines a mechanical vibration system with an electronic control unit to enable precise observation of amplitude-frequency and phase-frequency characteristics. An adjustable damping mechanism allows users to investigate the influence of damping on resonance behavior, while a stroboscopic measurement technique provides accurate phase difference determination. The system offers a comprehensive platform for understanding oscillatory motion, resonance, and vibration analysis.

Manufactured by Atico Export India.

Experimental Principle and Content

• Determine Amplitude-Frequency Characteristics of Forced Vibrations
• Determine Phase-Frequency Characteristics of Forced Vibrations
• Study Resonance Phenomena in Oscillatory Systems
• Investigate the Influence of Damping on Vibration Behavior
• Analyze the Relationship Between Excitation Frequency and Response Amplitude
• Measure Phase Difference Using the Stroboscopic Method
• Explore Dynamic Measurement Techniques for Oscillatory Systems

Educational Objectives

• Understand the Principles of Forced Oscillations and Resonance
• Analyze Amplitude-Frequency and Phase-Frequency Relationships
• Study the Effect of Damping on Resonant Systems
• Learn Practical Methods for Phase Difference Measurement
• Develop Experimental Skills in Vibration and Dynamic System Analysis

Spring Stiffness Coefficient (K) :

• Variation of Free Vibration Period: < 1%

Time Measurement :

• Accuracy: 0.001 s
• Period Error: 0.2%
• 4-Digit Digital Display

System Damping :

• Amplitude Attenuation < 2% Without Electromagnetic Damping

Amplitude Measurement :

• Error: ±1°

Motor Rotational Speed :

• Range: 15–50 r/min
• Adjustable Period: 0.2–4 s

Phase Difference Measurement :

• Error < 2° for Phase Differences Between 40° and 140°

Standard Supply

• Main Unit × 1
• Electric Control Unit × 1
• Wires and Cables × 3
• Instruction Manual × 1

• Excellent System Stability with Minimal Amplitude Attenuation During Free Oscillation
• Clear Resonance Effects and Observable Physical Phenomena
• Comprehensive Experimental Capabilities
• Easy Operation with High Measurement Accuracy