There are many  physics principles used in the Manchester Material Recovery Facility.

Watch the video and when it stops choose which physics principle is being illustrated:

• Newton’s 2nd law: The smaller the mass, the larger the acceleration for the same force.
• Principles of magnetism: Ferromagnetic material such as iron is attracted to magnets.
• Principles of electromagnetism: Conductors moving in a magnetic field induce eddy currents which then can interact with magnetic fields.