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Broad Topics > Mechanics > Equilibrium of a particle

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Building up Friction

Age 16 to 18 Challenge Level:

A series of activities to build up intuition on the mathematics of friction.

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Uniformly Unstable

Age 16 to 18 Challenge Level:

Invent shapes with different numbers of stable and unstable equilibrium points

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Hold Still Please

Age 16 to 18 Challenge Level:

Can you arrange a set of charged particles so that none of them start to move when released from rest?