School of Physics Lecture Demonstration Manual

Mb-1 Reaction Train

Published: Thursday 09 March 2006 - Updated: Thursday 17 March 2011

Aim

To demonstrate Newton's third law.

Apparatus

Diagrams

Click on pictures to enlarge.

Reaction Train 1

Reaction Train 2

Videos

Reaction Train 1

Train Moving, Track Stationary

Reaction Train 2

Train Stationary, Track Moving

Description

An electric train is placed upon a circular track that is free to rotate. By carefully adjusting the voltage the train can be made to remain stationary while the support rails will rotate beneath.

Safety notes

Electrical safety 

Maintenance 

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