Second Law of Motion Apparatus

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Students who first encounter this are always amazed and not quite believing until they see it repeated.

The unit is based on a substantial metal casting and the entire mechanism is visible. The spring gun offers two tensions.

The 25cm long unit has a 10mm rod. It may be horizontally clamped to a support stand or table clamp, one of which you must supply.

Complete with two steel balls and instructions.

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