Inertial Balance

Concept Overview

1. Measurement of mass that doesn't involve the force of gravity (inertial mass)
2. Simple Harmonic Motion

Lecturer Procedure

Steps to Follow

1. Place small mass on tray.
2. Tap tray to set in motion.
3. Note the period of oscillation.
4. Place large mass on tray and repeat steps 2 and 3

Expected Result

As mass increases, the period of oscillation increases.

Take it one step further by actually calculating the mass of an unknown mass

For the purposes of calculation:

• The mass of the tray (plus plates and screws for securing) is 0.875 kg.
• The spring constant has been experimentally determined to be roughly 260 kg/s^2

Video Demonstration

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