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# JLT-III moment of inertia testing equipment

• 類型

The moment of inertia of rigid body is an important parameter for fields like scientific experiment, engineering, space, electricity, machinery, instrument and so on. especially the heterogeneity rigid body of special-shape. The JLT-III moment of inertia testing equipment is using equivalent theory and three line pendulum theory to test the moment of inertia for heterogeneity rigid body of special-shape. Students could know how to get the moment of inertia of rigid body with equivalent theory and three line pendulum theory by experiments, and know how the length of line pendulum determine the results.

Brief Introduction

The moment of inertia of rigid body, especially the heterogeneity rigid body of special-shape is an important parameter for fields like scientific experiment, engineering, space, electricity, machinery, instrument and so on. The JLT-III moment of inertia testing equipment is using equivalent theory and three line pendulum theory to test the moment of inertia for heterogeneity rigid body of special-shape. Students could know how to get the moment of inertia of rigid body with equivalent theory and three line pendulum theory by experiments, and know how the length of line pendulum determine the results.

Technique reference

Voltage and power：（220±10%）V，（50±5%）Hz； W≤2VA

Working temperature：0~40℃

Time resolution：0.01s

Size：1100mm×500mm×550mm

Configuration

Three line pendulum bracket, photoelectric door, microsecond instrument, steel ruler

Experiment

1. Use the three line pendulum to test the cycle time of disc torsional vibration, then compared with theoretical calculated result. The moment of inertia formula: , torsional vibration formula: 2. Test and get the moment of inertia for engine rocker arm by equivalent theory

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