School of Physics Lecture Demonstration Manual

Mb-2 Newton's Cradle

Published: Thursday 09 March 2006 - Updated: Thursday 24 March 2011

Aim

To demonstrate the conservation of mementum and energy laws.

Apparatus

Newton's Cradle

Diagrams

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Newton's Cradle Pic

Newton's Cradle

Videos

Newton's Cradle A

Newton's Cradle B

Description

For small displacements we essentially have linear motion, and, hence conservation of momentum. Together with the conservation of energy law, it can be shown that if m balls are used to give an impulse to the system, then, following the collision, m balls will leave with equal momenta.

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