Grab-bag: Finding the centre
In this activity you will use a balancing trick to find the centre of mass of an object Related concepts movement, equilibrium, force Guiding questions Factual: How can forces balance? Conceptual: How are static and dynamic equilibrium produced? Inquire You will need: A lab stand and clamp A rubber bung or cork Some string A dissecting needle A lump of modelling clay to make a ‘plumb-bob.’ Set up the apparatus. Pin...